: The general view of laminate construction with foam core is it is has no
: weight advantage over strip or plywood cored laminates. The hangup is foam
: has much less stiffness so much more glass and epoxy is, usually,
: required.

Well, yes... and no.

For really small craft with simple load path solutions such as kayaks, the advantages are pretty much nullified when compared to a wood cored boat. When it comes to a more substantial boat, though, foam has very distinct advantages over wood, be it structural, lighter weight, or in its impervious nature towards water invasion and subsequent rot.

It will make for a fun project, though, as a kayak. It will also put you in the same company as the guys who build Olympic hulls for flatwater paddling events, even though they are cooking their hulls in female molds in an autoclave with prepreg carbon laminates and honeycomb Nomex instead of foam cores.

There's all kinds of information available as to layup schedules for the laminates used on boats like these. I say do it and have a blast. Forget about the naysayers and enjoy building your boat the way you want.

Chris