This boat is easy to build using our downloadable boat plans. our boat plans are available for instant download so you can start building right away.. This is your woodworking search result for free plywood boat plans woodworking plans and information at woodworkersworkshop®. Materials & tools: all the designs call for marine plywood, 1/4" for the hull and 1/2" for the bottom (except 3/8" for 10′ mini). scarfing the plywood will be needed..