Proper care of RV decals . . . Is there such a thing?

I used the Mcguires premium marine wax and was seriously disappointed. I worked and rubbed and applied two coats. After a few days I realized I had wasted my time. I got ammonia, Zep stripper and Bar Keeper Friend. It took lots of work to remove the wax and get down to clean and polished fiberglas. By comparison, it took very little work to apply 4 or 5 coats of Zep. Zep will not protect the decals against UV light, but I have not seen any issues after over 10 years.