Sponge-Rez Bodyboard and swim fin repair resin is unbelievably adherent and tough. Repairs many, many substrates except Styrofoam. Great on soft surfboards too!, Applications include:, Re-laminating bodyboard rails, Repairing creased slickskins, Bodyboard leash anchor repair, Filling gouges, Smoothing and sealing sponge decks, Repairing bodyboard fins, Tuning up swim fins,