Free boat plans for the backyard home builder, plywood and wooden sailboats, rowboats, dinghies motorboats. Simplicity boats is about sharing information that helps people expereience the fun of boat building for the least investment of time, skills, or materials.. Anyone have plans for a small wooden houseboat…25′ or less with a hull approximating the shape of the old flatbottom school boats used in louisiana in the old days. i’m interested in building one that looks good, traditional, in marine plywood with cypress and mahogany mixed in where i can. small outboard powered. i’m more interested in form than function at this point, so nice curved.