Before doing some overseeding in the back yard we decided to do some dethatching first. We rented the machine below at Sunbelt Rentals in Beavercreek using my son's truck (which has a lift gate) to transport it back and forth with limited effort. However, the machine is not self-propelled and while the spinning tines help a little, most of the power comes from yours truly. I was a tired, sweaty mess by the time the job was done. Come spring we'll see if the result was worth it.