Stitch and glue boatbuilding method using epoxy is a fast and easy way for a beginners to make a plywood boat. Hi milos, plywood used for kayak on pictures and videos is a regular one. this same non waterproof plywood is used in doubletrouble too. and for more then a 3 years. Dixi dinghy. 8ft plywood stitch & glue 3:1 dinghy great "own boat" for kids. sails 1 adult or 2 kids, rows 3 adults length 2.44m [8’0"] beam 1.28m [4’2"].