I have a 3 acre lawn that mostly has nice thick turf and few weeds but is very rough from 30 years of pocket gophers and moles. It is too rough to level with a roller. I'm thinking a Harley rake might level it. I don't want to completely tear it up and start over. I'm hoping to skim over it taking off the high spots to level it, then roll it if nessecary. I have a slit seeder and could over seed it, especially in some spots that are now somewhat thin. I'd be renting a skid steer and the rake. I've never used a pwer rake before. I'm in Wisconsin, the turf is fescue, bluegrass and some perenial rye I think. Its been on a good fertilizer program and is irrigated. I'd plan to do this in the spring. So, is the Harley rake what I need? Does it have a depth adjustment so I can keep it from digging in too deep? Any other ideas for me? Thanks.