Have been wondering about this for a while and see our good buddy Grant at Squeedunk does this. However:

One of the most annnoying and clunky aspects ( to me ) of stitch yaks is the whole raised coaming upstand and cockpit area. And unnecessarily so. As grant has done, and as the coaming is recessed in nick's guillemots why not the other stitch and glues. The blobs sticking out of the main kayak form would be lessened and a more integral shape achieved.

Essentially easy to form and construct, (just fair across the hull), and would be an major aesthetic addition to any of them. The inset would be cross grain for ease of placement, or w/ some difficulty may even be in line(steaming and undercuts?)

In addition, the coaming upstand often seems to be formed of thick layers of ply or solid wood. Would it not be simpler (even if not assuming curved shape) to cut the plan shape of the coaming in the coaming base as described in the beginning, then bending say a 4in wide length or cross grain ply (x the circumference of the opening) in a circle(I've played w/ doorskin and can get 4in radius or less), and gluing it in place w/ say the seam at the back (or front as well if peaked). After set up, plane off the overhang below and form the coaming lip and plane flush.(or plane to ht and add lip on top - whatever). And add layers of glass for the stiffness instead of hvy ply. Seems simple, fast and aesthetic.

-mick