Stitch and glue is a simple boat building method which uses plywood panels stitched together, usually with copper wire, and glued together with epoxy resin.. 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. Qivitoq: the qivitoq. the qivitoq was the first boat i designed and actually built. 17′ 6" loa, 24" beam. kayak #11: stitch+tape kayak #11 #11 is a stitch+tape kayak..