Browse our complete line of kayak plans! we have 54 wooden kayak designs that you can build from our plans: stitch-and-glue designs, strip-planked designs, and hybrid. 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. Wood strip manual stitch & glue manual: wooden sea kayak designs – recreational and high performance wood strip kayaks, plans and design specs….