I have a 1989 Charger bass boat that is stored outside 365 days a year. It seems the sun has baked the gelcoat off to the point of feeling the metalflake on the transom portion of the boat. Was thinking of masking off the gunnel and rub rail (the boat cover has kept that area like new) lightly sanding the transom, sides, and bottom of the boat and painting it with clear Imron. Will this hold up over time? I am told regular clearcoat will only last a couple years and will start to yellow and fade away.