I have been putting a coat a day of rub-on polyurethane(for the past two weeks) on a Warmoth J-bass that I initially stained(3 coats). I've been using lint-free cloths to apply the poly, although I still seem to get flecks of dust in the coats. I use a 3M Superfine sanding foam in between coats to get the specks out. However,when I reach the final coat how do get the job "finished"? I have a buffing pad I can attach to a drill and some Meguiars polish. Should I sand out the specks on the final coat and then polish, or should I get a rubbing compound of some sort?