Gelcoat is a much harder surface than clear-coat on a car. So you need speciality gelcoat restorer. First examine the surface. If you have a heavily oxidised surface with the colours appearing faded you need a Heavy cut. The colour has not faded but the gelcoat layer covering the Boat is sun damaged and has millions of micro scratches. So what we need to do is remove the very outer layer of Gelcoat by removing only microns, it has a dramatic visual impact.
Detailing Tip –
Apply the product to the surface with an applicator pad. Using a wet buff pad work in all directions applying more water as needed. Keep working until the desired result is reached. Wash the compound residue away with Fiberglass Scrub and Compound remover.
See also: Hard Wax Polish