jyoutz says it plain and simple. The more damage you are trying to correct - the heavier implement you will need OR more passed will be required with a lighter implement. If the implement is TOO light - you will soon see that continued use is next to useless. A toothed drag harrow will probably not correct your situation.
I have a Land Pride - land plane grading scraper with scarifiers. I uses it on the potholes, ruts, wash outs - etc. It works fabulously and requires little to no previous experience. Scarifiers are necessary to scuff up the bottom of potholes, etc so they incorporate with the new material dragged over them.
My driveway is a mile long and started out with a surface layer of pit run, crusher run,,,whatever you want to call it. Over the years - silt, sand & volcanic ash have been added - via our SW winds. I had my driveway constructed in 1982.
When our area dries out - after spring breakup - the driveway hardens like concrete. It takes my heavy LPGS to repair any damage. OR my heavy duty rear blade. Anything less just bounces along behind the tractor.
Another point - only grade up those areas that truly need repairs. Once the driveway is crowned and packed - leave it alone until repairs are needed.
