Free boat plans for the backyard home builder, plywood and wooden sailboats, rowboats, dinghies motorboats. Free pontoon boat plans. well look what we have cooking here: free plans to make your own pontoon boat! length: 12′ (3.7 m). We have power boat building designs of all types such as power cats, cruisers, and more. view jon boat deck plans & boat cabin plans for more details..