Some advice : Get 1 yd. of 1 1/2 oz. fiberglass mat. Cut the mat in half. Now you have 2 layers of 1 1/2 oz. mat. Locate a smooth flat surface for your 2 layers of 1 1/2 oz. mat to lay on. Way the smooth surface with mold release wax ( about 3 coats ) Use a clean rag & wipe the waxed area in between each coat of mold release wax. So for 3 coats of mold release wax , you'll have to wipe the waxed area 3 times. Now mix your resin & brush the resin over your waxed area. Lay your first layer on top of the resined area & brush more resin on top of your fiberglass mat. Add your second layer of fiberglass mat on top of your first one. Now , add more resin on top of your second layer of fiberglass mat. You can use a roller for removing trapped air bubbles. I use less hardener ( about half ) so i have more time to work. When everything hardens , you now have a fiberglass panel. You can cut out strips to fill in your gaps. Place them underneath the body ( make sure your strips overlap the gapped area by 1 inch ). Screw them all in place. Cover your braces with duct tape or gorilla tape. Cut your strips to fit just inside of your braces but overlap the body ( underneath by 1 inch on both sides). Now cut some fiberglass to fit inside your gapped areas. Add the mat until the mat is even with the bodies outer surface. Now resin the mat into place. After you've filled all your gaps ,& the mat has hardened , remove your duct tape from the outer edged of you pre-made fiberglass pieces & from around your braces. You will need to cut some more pieces from you pre - made fiberglass panel to fill in the gaps ( caused by removing your braces) . Now flip the body upside down ( make sure some of your main braces are still in place ). Now , cut some fiberglass mat to overlap your gap area ( about 4"s wider than your gap area ). That will be a 2" overlap on each side of the gap area. Glass in the entire length of the gap area using 2oz. fiberglass mat. Apply 2 layers of the 2oz. fiberglass mat. I typed these instructions out for an inexperienced fiberglasser. If you are experienced , then you already know what to do. If that's the case , then please forgive me. I DIDN'T MEAN TO BE CONDECENDING. Just HELPFUL.