Can anyone detail the hull construction of the O'Day 22 for me? I'm looking at a 1978 model boat, and plan to have her lifted to inspect the bottom. I believe the hull is of GRP construction and the decks, transom, and rudder are balsa cored, but I do not know this for certain. Furthermore, I'd like to know what type of mat was used for the varios layers (woven, shredded, etc.). If anyone could enlighten me, it would be much appreciated. Thanks, Justin