For my 21', I've already gone through 20 yd CSM, nearly 15 yd 1708, 10 qts of Cabosil, 5 qts to 1/4 milled fibers, and 15-20 gallons of resin. This was just to get the transom, stringers, under deck bulkheads, and bottom of the deck plywood. I haven't really had much waste so far.
I just...