I just came across the soil cultivator attachment for a Dingo. Is this thing too good to be true or what? Right now we sod cut, rototill, and rake out for our new lawn installs. So cultivator attachment basically shoves an existing lawn underneath fresh soil? Is that really an adequate way to go about lawn prep? Won't the area be open to settling when the old lawn (now underground) starts to decompose. The thing looks awesome, just wondering if its too good to be true. Can you really remove an old lawn and prep for a new one with this tool?