I decided that before i went any further with the sanding, i was going to go ahead and try to extend the deck. I really had no clue what or how i was going to go about doing it so i just jumped in head first, so dont make fun of my job. i am going to fiberglass over the whole thing so i left about 1/4 (about 3/8 in some places where needed) for the fiberglass. i was able to get a couple of lids form a buddy of of an old bass cat.