Hi. The link is to a blog of a skin on frame sea kayak I built about 6 years ago...my first and only... The kayak is great. Sits outside in the sun and rain and needs a new coat of polyurethane about once every couple of years. No plan sorry. I sort of made it up. Its not as hard as you might think. Feel free to copy any ideas in the blog and make them your own. :)
http://seakayakconstruction.blogspot.co.nz/