Sorta makes me want to ask, "What does does your polisher want to work with?"
I LOVE gelcoat, "heat the crap out of it and load it with wax...". It makes me happy (as well as the wax supplier.... not so much the shop supervisor...).
When I have to hit different coatings (vinyl stickers...."shoot 1st, forget about questions later...fix with monokote", some other paints can be touched but hate heat....sigh....).
I keep saying, "If you want a price on a GOOD wax job, so be it. You want to go around other stickers/paints, PLEASE charge extra...". "Please".
Some finishes are rather easy to get a, "Customer approved, glider happy" result. Trying to "cut in" stickers/different paint, OR, softer finishes sorta pisses off the final polisher. :-(
Since I'm the "end guy", I have to "polish to a price", but what I do is the final result of many steps beforehand.... I can't polish crap (to look really good), but I can make good prep look like crap.
The polisher is the last in the, "Quality to the end user" chain.