There are various systems available to restore fiberglass and decals. I bought the Polyglow kit and it works fine for my not vary faded TT. My kit included a cleaning chemical and scrub pad. The cleaning step required a lot of elbow grease. It did a great job and did not damage either fiberglass or decals. You may have already damaged the surface using an automotive polishing compound.
The finish step restores the shine and protects the surface from UV. I presume UV levels are high in Loveland. The finish step is easy to apply but very finicky about the exact method of application. Follow detailed instructions exactly for excellent results.
Polyglow also sells a heavy duty cleaner for severely deteriorated surfaces. I did not need that. The Polygolow system seems to work well on paint and plastic surfaces like bumpers, vent covers, and fittings as well. I am not sure it is recommended for that purpose.
I wish you good luck and happy trails ahead!