Plenty of people use W-O-W-O with SG, but I'm not one of them

I too like to let it set up as long as possible, often overnight. I also get at least 4 layers on before topping, well, actually I don't top any more as I want to keep adding SG from time to time.
No way to exaggerate how thinly you should apply it. Yesterday I absolutely could *not* see it on the roof of the MPV under fluorescent lighting (could see it under incandescent/tungsten if I really tried). I use a fraction of an ounce for the whole minivan.
When I had trouble getting it off (I had to intentionally apply too much to see what all the fuss was about

) I just fogged the surface with my breath (maybe tough if hot and humid) and the little bit of moisture took care of things. I liked how it worked so well that I now "fog" whenever I buff off SG.
GroovinPickle- If your garage is dust-free I'd let it set up overnight and wipe it off tomorrow. I could never get a thin enough application with the PC, but note that I'm sorta extreme about only using as much as is needed. I do *not* moisten the SG applicator, only thing on it is SG, but as Audipower posted, some like to use the matching QD.