Does your boat's aluminum hull need touching up? Make it like new with Parasol's metal filler, Alsiflex, which repairs your boat's surface without shrinking, cracking or absorbing moisture. Alsiflex is flexible and lightweight and can be used on thin areas that are susceptible to shock. This strong finishing filler even works well on trucks, cars, motorcycles and RVs. Alsiflex retails for $49. (888) 702-0778.