I have seen miracles performed with chalky faded gelcoat. The hull, topside, and decks of my boat are Awlgrip. It requires special care such as using Awlwash and not polishing, but the paint has held up well against the Florida sun--very durable. I am having the hull repainted after the PO did it a little over 10 years ago.
“Go small, go simple, go now”
― Larry Pardey, Cruising in Seraffyn