Evercoat Marine Gel Coat Scratch Patch Use Evercoat Gel Coat Scratch Patch to repair fiberglass boats, bathtubs, shower stalls and hot tubs. This product provides easy permanent repairs on hairline cracks, small scratches and chips in fiberglass. This one part formula does not need a catalyst. Just fill in the crack, let is set and scrape off the excess with the enclosed spreader. It is just that easy. Clear Scratch Patch is ideal for surface scratch repairs of metal flake finish. Available in