Why we don’t have required plans the required hull shape. with almost every other sailboat class, the way it works is you buy a set of plans that the class sells, and. Free boat plans for the backyard home builder, plywood and wooden sailboats, rowboats, dinghies motorboats. Thinking of building a duck boat? the duck skiff 15 is capable of holding two or more hunters with large amounts of gear. view our duck hunting boat plans!.