Last weekend we took a day using
Meguiar's Marine/RV fiberglass restoration system on our Axis. It did wonders removing 6 years of oxidation. Not sure how long it will last but it looks pretty good now. (Keep in mind it is a 3 step process: Apply/remove, apply/remove, apply/remove which means it feels like you've waxed the thing 3 times--we were both very sore afterwards LOL)