Another semi-noobie needs some hints: I've not used a box blade before, but I'm thinking about renting one to recondition our access road, about a mile of badly potholed gravel and hardpack, with some large puddle areas that need refilling. The driveway video on Wilsonoutdoors.com looks like a freeway compared to our road! I notice in that video the scarifier blades aren't touching/working at all, just the back blades. For my situation, in order to cut out the potholes, I assume I'll need to use the scarifier? And if so, should I make multiple passes taking it down a little at a time, or go for a deeper cut? The tractor is a JD790, if that affects the process. Thanks for any hints.....