Burnishing works best for mild pitting....
For light surface rust that isn't forming little peaks, the fine steel wool and oil works well, but if the rust forms little points, cover it with oil and gently rub with a hard steel rod. Polished steel works better as it won't add any scratches.
What this does is pushes the oxide that was raised by the rust (kinda like a bubble) back into the pit that forms underneath it. AFter this is done, you will notice the surface area of the blister will be much smaller than what would be there if you steel wool it first.
Give it a try - it works well. I use a polished chromed 3/8" Snap-On ratchet extension....nice, shiny and smooth.
'Si vis pacem, Para bellum'