Fastest way for a scuff and squirt paint job

+1 on wax + grease/tar remover used to clean the entire surface to be scuffed. +1 on scotchbrite pad, grey is what I use most and is less abrasive than red. If I can't wash the car after scuffing, I use a blow gun to remove most of the dust, then sprayway ammonia-free glass cleaner for an initial clean before final wax/grease remover and tack off, along with masking everything off.