Buffing Single stage

I use single stage acrylic urethane and wet and and buff all the time. Single stage urethane is pretty much the same as clear but with color in it. 1500 to 2000 soft block and lots of water, rinse paper very often as any dirt in paper will make deep scratch's. Then buff with a adjustable buffer at low speed so you don't burn through. Not agood idea to sand and buff single stage metalic as the metalic stacks up a certain way and sanding will alter the way it is supposed to look. Use 3M finness -it compound, a little pricey but works well. Larry