seems to have strips of wood on inside, but not a lot of them... about 2 ft at widest point. maybe a thin plywood. Wood itself looks like good condition, just needs sanding and refinish with varnish, has small nails or screws on edge along top. No real damage to wood at all.
I think it weighs 57-60 pounds, but that is weighed with my bathroom scale. Does seem to have a small amount of fiberglass weave along the bottom but it seems to be just a strip to protect keel edge. It also has a fiberglass weave covering the inside of the cockpit.