Unless you've got arms like Popeye I wouldn't worry about it then
Probably should clarify the difference between polishes, glazes and waxes though.
A polish contains abrasives, and like sanding, is the process of removing very small amounts of clear coat to remove defects. I guess its possible to use these polished by hand to remove clear coat, but I don't see how you can generate the heat to do it effectively like a machine...especially on very tough clear coat.
Things like AutoGlym Super Resin Polish are actually glazes, despite the name. They dont contain much, if any, abrasives and rather than remove defects, they 'fill in' defects. Easier, but not permanent solution.
Waxes/sealants are just layers of protection. Contain some filling properties like glazes, but mostly there just to provide a sacrificial layer of protection.
Apologies if I'm teaching you to suck eggs...!