Plywood kayak designs (stich & glue) including plywood construction plans and stitch and glue kayak manual.. The jupiter point series of kayak designs are intended as easy-to-build, fun-to-paddle, versatile collection of kayaks. with a simple 3-panel hull and unique 3-panel. A kayak is a small, narrow watercraft which is propelled by means of a double-bladed paddle. the word kayak originates from the greenlandic language, where it is the.