Looks like your getting a real good shine. Someone already asked what your using and I would also like to know.
I'm working on the same project. Got the nose, rear cap and 1/2 of the roadside side finished. (started last Friday) Trailer sits mostly in the sun in backyard so only getting to work on in the evenings. I waxed when 1st purchased so it's been about 3 years. I'm using Maguire's cleaner wax and its taking off black marks and bug stains. Its liquid and taking some rubbing effort to put on and clean as much as I want but it is easy of and leaving a great shine. Randu