The floating force (buoyancy) of the hull needs to be bigger than the weight (gravitation) of the boat. Even if a boat is stabilized and has floated, the shape like a flat board has a big drag force, then high-speed running cannot be desired. The figure to the right shows an Alpha-type Stilring engine, which was designed to use a model boat. Tips of the development of a high-speed Stirling engine boat are that the development of a low drag hull and high-power engine. Our ROB ROY is truly a unique step forward in canoe design and construction, made possible by our Fast-G Stitch-N-Glue boatbuilding system coupled with advanced plywood development techniques. The graceful styling of our symmetrically ended ROB ROY belies its ease and speed of construction.
This drawing is from the instructions and gives an idea of the hull shape and construction method. Learn how to fiberglass the easy way, by looking over the shoulder of an expert who is working on actual boats. Using live mapping on your GPS screen is the best since it is easily viewed and Humminbird really simplified the process.
Since the blue arch is unusually shaped and blue and not dense I conclude it is the bait on the edge of the 2D cone. When we arrived at the location one spot was already taken so we went to the 2nd spot on the list. I was wondering about these fish since I was hunting bluegills and dropped the camera on another dark water lake.
I tried slip bobbers, jigs and rigs with no bites so my friend and I took a look with my AV Multi-Vu Complete Camera System which has no screen but a plugs into my Lowrance Gen 3 and I use it as the screen. As you can see there are endless combinations of sonar and component configurations available.
Armed with a Fin-tech NuckleBall Jig tipped with a minnow, a good jigging rod like one of St Croix’s Legend Tournament Series, a top quality spining reel loaded with superline, and a Lowrance HDS series with Navionics Mapping is key to find those fish that are holding tight to the bottom.
I use a similar set-up for my Salmo Zipper and Chubby Darter plus the Moonshine Shiver Minnow. If you have side scan you can see which side of the boat a target is.Notice the rocks are opposite the man-made structure but on the DownScan they are overlapped.
The next example shows fish by a tree on DownScan and the side scan shows the same fish to the left side.
Humminbird ONIX – Bird’s next generationI had the opportunity to run the ONIX 10 SI all of the 2014 fishing season and was glad I did. The Custom high CHIRP gives slightly better target separation than the standard 200 kHz in this comparison. One tip for Elite owners, when you select Custom High you can select a frequency between 190-210 kHz. Testing the CHIRP on my school of crappies didn’t show much difference between CHIRP and a single Custom frequency at 2 different speeds. Crappie Fish Arches and Boat SpeedSlow boat speeds create long fish arches since the fish is under the boat longer.I have some nice examples of using different boat speeds and different manufacturer’s sonar going over the same school of (10-11 ? inch) suspended crappies to show the difference. Notice the Lowrance has longer tails on the arches, this because Lowrance’s 200 kHz cone is a little wider and the “tail” of the arch is the fish on the edge of the cone. This image is using a Lowrance 200 kHz frequency while moving slowly over the school of crappies. This image is from a Raymarine a9 using the 200 kHz frequency at a speed of 2.3 mph which is in between the above images. I often get questions on what fish look like on side scan at different speeds from both Humminbird and Lowrance users. This image has the fish show at both speeds to show how speed affects the way fish are displayed. Notice the color bar on the right which shows the different colors in order of strength of the echo.
You can use the colors to determine fish size but always look at the thickness of the fish arch since that also determines size. This image is what you see if you have your transducer tilted with the back end of the transducer lower than the front. Mark O’Neill Doctor Sonar Pro Staff uses these images to demonstrate how fish show on sonar at different speeds. Short video on using your Vexilar ice fishing in shallow water explaining how to interpret what you are seeing with video of fish and a jigging spoon simultaneously.
Winter crappie fishing in Kansas can be the fastest action most anglers will have all season. Scroll speed: If you set the scroll speed faster the fish will scroll off the screen faster and if you slow the scroll speed the fish will stay on the screen longer. If you want to determine how far the fish is behind you with the Lowrance HDS models you can place a cursor on the fish (black arrow) and the distance to the fish will show up in the lower left (red arrow) and the chart cursor will show you where the fish are located on the chart. The next time you wonder where is that fish on the screen, remember it is affected by the boat speed and the scroll speed but you can get an exact reading by putting the cursor on the fish. I use 7-8 ? foot rods so I can fish a long ways from the boat and still get a good hook set.
I prefer large bobbers and use split shot to keep them neutral weighted so the fish don’t have as much resistant pulling the bobber down and this allows for longer casts. My preferred bait for slip bobbers is a leech since the bobber does not move much which allows the leech to swim and I think this is the reason leech’s work the best.
Other bait choices depending on the fish species you are pursuing are worms, pieces of leeches or worms, maggots and wax worms.
DownScan has a very narrow beam front to back and wide beam side to side so you will “see” finer details.


Bait fish are going to show up as fine grain dots, like under the green arrows, while the larger fish are larger white returns like above the black arrows.  The regular, or 2D sonar, tends to blend the returns together because of the wider shape of the beam in all directions. This is approximate view of how DownScan and 2D sonar cones look like as you scan the bottom. If you have depth as a digital overlay and it says 3 feet it is actually 4 -4 ? feet deep since most transducers are mounted 12-18 inches below the waterline and sonar can only measure the distance from the bottom from the transducer. One weed patch is about 52 feet from the transducer on the right and the second weed patch is about 56 feet from the transducer on the left. On this image the fish didn’t change depth but the distance from the transducer changed as I drove over it. It appears the tail is 6 feet deeper on the display since sonar can only measure distance of the target from the transducer. Another feature from the HDS Gen 2 product line is Structurescan, which is comprised of Downscan and Sidescan.  With these technologies, you are able to see what is below and on the side of the boat as an image with great detail. StructureMap has also been carried over as well and in my opinion is still one the most under-utilized and talked about technology that has arrived in recent years.  This allows the angler to create underwater life-like images of the bottom surface, but more importantly it allows the user to be able to save that data for future use. Moving around the menus of the Lowrance HDS-9 Touch is very easy.  From the main page, when a tab is pressed on the Utilities panel (left side panel), a secondary menu appears. From these different screens the user can set preferences and setup the device to suit their needs.
At the center of the homescreen are the main icons, tap an icon to view a full page screen or press and hold to view options for the split screen page options.  Once at the desired screen page, the menu will appear to the side and when not used, will move off the screen until needed. The result is a hull form shaped at the ends like the swift, agile, and quiet running round bottom canoes, with the stability and load carrying ability of a vee-bottom chined hull amidship.
In fact, it's so easy to build, that if you can't build this boat, you probably can't build any boat. I use a zero lines SD card to record the data to since at the present time if you record to the internal memory you can’t get the data exported. I thought I was seeing fish in the weeds but I looked for a long time and never saw a fish but saw many tall weeds lying horizontal so the sonar did not show the weeds as attached to the bottom and they then looked like fish to me. There is no doubt that this is the new and correct direction for the future of Humminbird.The first thing you will notice upon looking at the units is the very clear and crisp display. Humminbird allows ONIX user the use of a cross touch screen or traditional buttons to navigate the menus.
So far I can’t see much difference than the old 200 kHz standard frequency at shallow depths. You adjust it with the adjust feature and I think it is worth testing when you get crosstalk with 2 sonar models to see if it helps.
You can slow the chart speed on the Humminbird which will change the length of the target displayed. I think of weeds as the major food basket of the lake and that means my fish will live there at some time during the season. Both images display the weeds well but if I was in deeper water I would prefer the higher sensitivity since you need higher sensitivity to see targets as you go deeper. What is currently below the transducer (boat) is what is being printed on the far right which I have pointed out with the black arrow on the below image. If you use heavier line it does not cast well.  You want a thin line for casting that does not break easily when you get the fish of lifetime on! The StructureMap is easy to interpret but the DownScan is confusing since the 2 weed patches look like they are under the bottom. Since the bottom is 33 feet the sonar can only display the targets at the depth they appear which places them “under the bottom”. The tip of the tail is the farthest the fish is from the transducer and reflecting enough sound for it to be displayed.
With the tournament being near the holidays and having a baby in late fall I wasn't going to be able to prepare for this tournament on the water. We decided the best way to attack this spot was to get into position with the Lowrance GPS and Docs map card. So next time you are thinking about hitting the hard water take your GPS with you and do a little homework. I use my Aqua-Vu Multi-Vu Camera System attached to my Lowrance Gen 3 with the optional video in power cable so we can all view the secrets of the deep on the Lowrance! I started mapping the closest area before I went out fishing and mapping.This image is showing the start of the mapping. I have said for years the best use of a camera in the boat is if you see fish and can’t get them to bite look with the camera to confirm if you are reading your sonar correct.
As they ponder upon the latest electronics gadget for bit as they take it all in, I will strike up a friendly conversation asking how their day is going, if they have had enough of winter, and if they have any questions or concerns on the new techno-fish finding gadget and 90% of them do. The Lowrance is still marking fish but they have become uncooperative and are holding tighter to the bottom, no longer taking your faster presentation?I live by the motto - Don’t leave fish to find fish. Move around slowly looking for that slight separation or change in the bottom indicating a fish. The fish may have moved off to a subtle break, slipped out to deeper water, or moved to near by rocks. A baitcast reel with a flipping mode is a must when running this setup (Abu Garcia Silver Max). I like to see the map, 2D sonar, down imaging and side scan and that is a lot of dash space to be used. But many people have been wondering about the Lowrance CHIRP so I used the data I have collected so far to show you some of my examples.The Elite will use the standard HDI transducer and the SonarHub will use the Airmar TM150. The 83 kHz has a wide cone which is putting more information on the screen than the 200 kHz so you lose the target separation.
You can actually count the fish because the cone is narrow and therefore doesn’t display “tails”.


Weak echo from small or soft targets reflect less sound and your Humminbird displays the difference.
Panfish, walleyes, bass and many other species populate weeds and understanding weeds is important in catching those fish.Your Humminbird displays weeds differently depending on SI, DI or 2D sonar. We then wanted to cover all depths of the point edge so we could find what depth the fish were in. Perch are one of my favorite fish to eat.The images show the school of perch and the short weeds. Zooming in and Zooming out is now as simple on your sonar and map as it is on you smart phone. These are your best choices right now; it may change since electronics often change the week after I write something!Traditional sonar is called burst sonar and the sound is sent as a burst at one frequency which is usually 50, 83 or 200.
I prefer reels with large spools so that I have enough line to fish a long ways from the boat and large spools help prevent line twist. Best of all, your ROB ROY, with its clean, smooth interior and classic appearance, will turn heads wherever you go. The detail of the map enabled me to narrow down my target area to only a handful of what I felt was high percentage spots.
Yesterday the fish weren’t biting and I dropped the camera but there was a big algae bloom on my lake and I couldn’t see below 12 feet well. I run both at the same time for comparison and if I see a fish on just one transducer I know which side of the boat it is on!!!! This technique is where the Lowrance HDS Sonar unit’s really shine; the jig can be clearly viewed as it approaches the fish, and the jigging motion is easy to see. You can’t tell which side it is on since the left and right edge of the cone is combined, something 12 feet from the transducer on the left with be superimposed on something 12 feet from the transducer on the right side.
The digital signal processing also makes for a much cleaner sonar picture.Along those lines, the SI and DI images are also notably cleaner.
With a pinch a spread or a point you can be looking at whatever you want in very detailed fashion. Handling with either one or two aboard is positive, and even though the hull is unsinkable, the optional built-in flotation chambers will give added peace of mind. I found one area that had 3 high percentage spots within close proximity of each other so I decided that's where we were going to go tournament day.
A Point 1 GPS module with a heading sensor may be helpful to help them pinpoint structure.? Budget?? Screen size?
The cone is usually larger with CHIRP so bottom detail is not as good since a narrow cone is better for bottom detail.The Elite gives you multiple choices in frequency choices.
This was going to be a put all your eggs in one basket strategy due to the location and poor ice conditions.
There is now a dedicated crystal for SI, one for DI and one for 2d sonar all in a single transducer. Same goes true for many other functions.The touch screen also makes using the I Pilot Link system much simpler. Touch a spot on the screen, hit GO TO, touch spot lock on the drop down menu and your trolling motor is navigating to the exact spot you want to fish.On top of all of this, the user now has access to Smart Strike which is a software package designed to help the angler pick the most productive areas on their favorite lake based on real time conditions.
Once we got the depth right, the point and shelf just funneled the migration of fish right past us.
With Jigging raps heavy line is preferred because you will be ripping these baits in heavy cover and rocks. Just run a quick search to match a spot you are currently fishing or one based on your desired species and in a matter of seconds, your ONIX will show you the way to the next spot.Auto Chart Live is also an incredible part of the ONIX system By simply turning it on and driving around you will create maps right before your eyes. Or the skies the limit with multiple networked sonars with StructureScan technology, stereo, auto pilot and more! Keep in mind if you plan on using 2 stand alone sonars such as the Lowrance Elite series on the bow with a transducer on the trolling motor and the other on the console with the transducer on the transom, you could run into cross talk if both units are used on deeper water.
This means you can use them with your I Pilot Link to follow the contours that you have created. There are some ways to alleviate this by setting each unit to run on different frequencies or adjusting ping speed if they are capable of making these adjustments. Or going with units that are networkable, units like the Lowrance HDS series you can select which transducer to source to read.
Here is where the Lowrance Elite series excels; depending on your budget you can go up from a 3” screen all the way to a 9” screen. You can get DownScan, CHIRP and GPS in this series, these are a user friendly units basically a plug-n-play and go fishing units.
This boater wants 2 sonars and wants to save some money, look at going with 2 Elite series units.
One on the console with a transom transducer and the other on the bow either using a built in transducer if equipped or strapping on a external transducer. Certain Elite units have limited networking capabilities via a NMEA 2000 network with limited waypoint sharing and can share a POINT 1 GPS module. The Ethernet cable will be daisy chained between sonar units, weather module if installed, basically plug-n-play. NMEA 2000 is a bit more complicated and requires some additional components such as a power node, tees, cables and end cap resisters.



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