Free plans: absolutely free plans (links to free online boat plans) ariawood boat works (plywood punts, jonboats and one-sheet boats) architectura navalis mercatoria. Scull boat. with our scull boat, you can slither through the water like a gator, sneaking up on waterfowl while not disturbing the solitude of the pond.. Looking for "towboat kits? there’s only a few kits to choose from and also a small number of "basic hull – kits" too. and there are sets of plans from.