Thanks for the input.

Source was a local Hobie dealer who prefaced the conversation with the statement that the Wildcat is a "rare" boat so he may not have the latest price. The price you quoted doesn't surprise me.

I'd be more inclined to look at plywood first. Two layers of veneer, laminated at 90 degrees would be stiff but I've no idea if it would be stiff enough or hold up for any appreciable time.