The late Platt Monfort came up with the idea of using Ultralite aircraft technology to create beautiful, light weight, yet strong watercraft.
Basically, the craft consists of a wooden lattice style framework, complemented by a criss-crossing Kevlar roving and then covered with Dacron which is then heat shrunk to form the finished work.
My heartfelt thanks always to Platt and the people at gaboats that continue to support his ideals. Smile3 - A Nimrod12 just hangin' around before going to Ireland and going under the name of "Bodhrán".
Basically taking two common ideas, ultralight geodesic airolite construction and a nesting boat, and combining them.
First I'll say that car topping a skin-on-frame boat is easy as can be, and not having to put a boat together will make me that much more likely to use it. Basically you build your boat as per normal, but add twin bulkheads where you want the boat to split. You can do this with many different existing dinghy or canoe designs, I suspect - though with varying nesting success due to different flare, tumblehome, etc.
With one of Monfort's boats, I think you'd cut the boat apart before skinning it, and that lightweight ply bulkheads would be sufficient. There are, also, a few examples of three section (bow, cockpit and stern) SOF, wooden and fiberglass kayaks, though they don't nest.
Here's a link to the thread I put together while building this boat, you might find it useful. I think more ribs that are fairly closely spaced are safer for your structure, marcus, as they help distribute and share the stresses so that the individual small pieces of wood that make up the frame don't get too much point loading.

We will sell the boat off on our homepage if it is a success and try another with more budget next time. Maybe I mortise the inner Gunwale to take the ribs and screw on the outer gunwale over the cloth. I haven't built one myself, but I always have seen SOF canoes with the skin over the gunwales in a variety of forms never sandwiched. I`v spent money on material, tools and not so little of my private time to drive around, get wood, milling the wood and testing things. I have built several of these designs and have studied in detail most of the various plans. To get WoodenBoat delivered to your door or computer, mobile device of choice, etc, click WB Subscriptions.
I've built a pile of skin boats and two plywood nesting dinghies, but not a nesting skinboat. My gas mileage, even with three SOF boats on the roof, doesn't actually suffer that much, either. Wrap the skin around the edges and fasten it with your favorite method (sewing, staples, epoxy, etc). We could probably go with one of the plans from gilpatricks book on strip canoes that I bought.
My thought as to why is because if you sandwich it, you need to remove a gunwale to replace the skin. As I understand there ist a line woven in the edge that holds the cloth above the gunwales.

Build the twin bulkheads a millimeter or so apart, so you can get a saw blade between them.
I am interested in building a sectional canoe next but I want to start with existing plans and save the work. I might have to add a spacer to keep the two bulkheads from grinding against the fabric and roving. I'm not a naval architect, and I haven't built a Platt Monfort geodesic design - so take all this with appropriate skepticism.
Drill some holes in the bulkhead (above the waterline, preferably) and bolt it back together. The ribs oak for easier bending ( again what dimensions?) or pine, which one should we use? The Adirondack guide boat (at least the one in the line) has the gunwale on the inside with a rubrail over the skin. It makes sense to me because if you have to remove a outwale, that impacts the structure, versus a rubrail which is cosmetic.

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