That's interesting that the lay up is so flexible. I tsalked with esquif
this Spring at a paddlesports show. It seemed as their focus with the Twin
Tex lay up was initially in whitewater boats. They're plan is to offer more
flat water tripping boats, both tandem and solo. They're very proud of the
fact that the Twin Tex lay-up is more eco friendly than other epoxy resin
offerings.


http://www.esquif.com/en/index.php?mod=modeles&id=31

I paddled a TwinTex Zephyr last weekend for a few minutes. Fiberglass
matrix in a polypropylene resin. Didn't have to carry it, so can't comment
on the weight, but it's very flexible. Grab the gunwales (not while in a
rapid, please) and you can pull them together about 4". The Zephyr is a
little twitchy initially, but its secondary stability is phenomenal. The
rail is pulled in about 2" from the widest point of the hull. Lay it over
and you almost have a second hull under you.

Steve