composite. there is NO wood whatsoever on these boats
The only wood is the teak platform on some boats like mine.
From waterski magazine in 2001:
How is this boat built?
We use all fiberglass in the lamination, and there is no wood in
the structure at all. The stringer system we use is an all-glass
box system that is chemically fused and pressed into the boat hull.
When you chemically fuse two components together, it makes the boat
stronger and gives it a more solid feel in rough water.