Out with ZEP, but what for best protection and looks?

Not sure I can install new decals--not that patient or detail oriented. I have not tried acetone but know ammonia streaks it.
I used the stripper but although it runs, it is not much different from the Zep itself.
I need to work on it this spring. That is one thing about living in a winter climate--such work is best done in Arizona's winter while here in Colorado it requires waiting for warmer weather.
The cover seems to be holding up well though and I hope that we have success with the leaks too.