Lee, you still did not answer the question. Did this guy have plywood or foam bulkheads???

Larry

: He was an average weight person 160lb, with 100lbs of stuff and very rough
: use. The layup was the regular 6oz on both sides. If you are serious about
: making this boat light then I'd re-think very light glass and simply make
: SURE your application is as frugal with epoxy as necessary. The bottom of
: this kayak can be surprisingly flexible given the shallow angle at the
: keel. I don't think minicell bulkheads would be lighter than plywood.
: Although if you are making the bottom even more flexible with light glass
: then minicell bulkheads would be good. Not using hatches or bulkheads
: would make more sense than 3.2oz cloth as a lightening method.