I want to build a fiberglass box to extend my anchor locker so I can add a windlass.I was thinking of using coosa board and fiberglass over.The pitch now is 110-120 degrees and I would like to extend it out so it would be 90 degrees.My question’s are; How much should I sand past the gel coat?What type of fiberglass sheet should I use?What type of resin?Do I glass inside and outside the box?How many layers of fiberglass over the Coosa? And will this be strong enough to withstand the pressure of a windlass .I want to box out the access panel and place the access panel on the front of the new box.




