Stringer/Transom area question

[1bayouboy]

I was planning using that as well....it comes in a couple of grades (weights). It's more expensive than marine plywood and comes in various thickness from 1/4" to 1 1/2". Essentially its polyurethane foam impregnated with glass fiber....
http://www.coosacomposites.com/bluewater.html
and sample prices...

sample price list

[JohnB]

I will be doing some research next week, and post what I find.