Don't grade your driveway out flat. If you get an I beam or something like that, angle it so you pull the gravel towards the middle of the driveway. You want a crown on a road so it sheds water. If you don't do that, you end up with potholes. I'm not saying you wont get potholes with a crowned gravel or clay road, but it slows down the deterioration A LOT. If you only have drainage on one side of the road, pull the gravel towards the high side. If you have a good grade on it and you're just trying to smooth it out, dragging a piece of chain link works and works better with some weight on it. Good drainage is key, though. Doesn't matter if it's concrete, pavement, gravel, or dirt.I have a 100ft gravel driveway that's getting pretty worn down. Does anyone have some detailed plans for a single width grader?