:Some answers (based on bldg. a Ches. 17')

1) Only the coaming and maybe the hatches had full sized drawings.
2) The plywood panels were cut by marking offsets on the panels every foot or so, and then laying a batten against thin nails to get a fair curve...a line was drawn with the batten in place, and two panels were cut at a time, back-to back, so that the panels were identical in size and shape.
3) The plywood was scarphed and glued with epoxy to make long length panels.

(remember, my recollections are from a CH 17', and dated a couple of years...you might want to get the New Kayak Shop at the library to see how S&G is done in general, although some aspects probably won't apply to your specific boat).

Good luck...it was fun for me and everything turned out well...also, write on the CLCboats forum for specifics about your model.