For reference, Klepper makes their deck out of a "proprietary weave of Egyptian cotton and hemp", yet make the boat hull from "Polyester Core Hypalon". Since they have been a manufacturer for a long time, I assume that if hemp made an excellent hull material that they would use it. Of course, it could be that what they use now is just a better material, and maybe hemp works fine. I'll ask around and get back if I find out any more info. See

http://www.klepper.com/perform2.htm

: Just wondering if anyone had any thoughts about making a skin on frame with
: hemp canvas, I figured it would work well, the old dutch boats had to have
: been made out of hemp, canvas is the old duch word for cannabis. What
: weight fabric would work best though? I'm planning on making a skin
: guillemot, does anyone else whose made one have any advice.