yes it can. the secret to a good repair is color match. If the boat is not too old, and you can get some gelcoat from searay, that will probably be the best match you can make. If the boat is a couple of years old, it has faded and new factory gelcoat will not match exactly anymore. In any case you can fill the gouges with gelcoat and wet sand starting with #320,400, 500, and then 600. then use 3m heavy duty rubbing compound and then finesse-it, you should have a shine comprable to the rest of the area.