You can find boat soap at most home improvement and boat supply stores. You can use non-skid cleaners to clean the deck of the boat where the plastic is molded in and hard to clean. [1] X Research source
If you find small, hairline cracks in your boat, you can repair it yourself by using epoxy. Fiberglass epoxy is available at most boat supply stores. Follow the instructions on the epoxy for repairing the cracks. If the crack is deep or larger than a hairline crack, you’ll need to take your boat to a professional to have it restored.
Depending on how bad the stain is, you may need to apply more than 1 coat. If you find that one type of stain is resistant to the remover, look for a specialty remover. You might need one to remove mold, black streaks, or rust.
The best wax to use for restoring your gelcoat is marine wax. It’s specifically designed for use on boats and it’s waterproof. You can also use car wax, as long as it’s hard shell wax. Use a cloth if you’re applying the wax by hand. Use a foam pad if you’re applying the wax with a buffer.
Reload the pad with wax every few feet.
