Ya know... I had a 2003 Winnebago Adventurer that had lost the shine. I tried all sorts of over-the-counter products that promised a shine, but alas NONE of them worked. They just shined the already dull fiberglass. Then, i talked to a boating buddy who details fiberglass boats: 2000 Grit Wet Sanding! Yep, a LOT of work, but wow did it turn our super-duper. Then I followed up with a good quality wax and waxed it once each year.
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