Fiberglass bed cover for 75 bucks here on the desert island

I made a flush mount fiberglass bed cover from an over mount bed cover I got used, I took a full size for a Dodge and cut it down, it already had mounts for supports and I coated it with bed lining paint , use an abrasive blade to cut fiberglass, when picking out an old cover it needs to be flat and not shaped. Invent on'