Originally Posted by smurphny
I'd like to lay up a very light foam core via stitch and glue and then cover with Kevlar, emulating the construction of some ridiculously light whitewater racing canoes I've had. The last 18' Sawyer weighed in at something like 45#. A boat as small as a dink, say 8', constructed with these ultra-light materials shouldn't weigh more than about 40#. I just need a design so as not to reinvent the wheel.
These seem pretty interesting and similar to what you're talking about.
Dinghy plans for the spatially challenged
They're crazy light.