Boat plans catalog – 400 boats you can build – choose from below:. Clark craft offers hundreds of boat plans, design patterns, and a full line of boat building supplies and accessories for the amateur boatbuilder.. 1 sheet + is an attempt to make a nice looking, good performing small boat out of a single sheet of plywood. with a 30" beam and a length of 88", the boat achieves 4 mph with a trolling motor. of course it can be rowed and paddled too. costing about $100 to construct, and capable of a 6 foot 190 pound occupant, it can be many things to many people..