"popular science" magazine and "popular mechanics" back issues can viewed on line at google books. all these free boat plans can be built by anyone with a modicum of.  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. Free plans for stitch and glue boatbuilding. many good free plywood contruction stitch and glue boat plan. stitch and glue plans are good wooden boat plans for beginners..