Well, a wrap is vulnerable to any type of brush or limbs. Do you ever encounter these?
FWIW, I wash my tractor a few times a year, and I wax it about every 9 months. It takes me about 45 minutes to wash and wax it. If I am wasting my time, it does not add up to much over a year.
I use Griot's (there are other good choices) spray/wipe on Ceramic Wax. Forget about the Ceramic content; the Silane polymers do an incredible job. It is a spray on / wipe off wax, and you should get at least 6 months of protection out of it.
It is safe on any surface, and it does not leave any white residue (not even on rubber or plastic).