My name is JimMac from Boston- I own a asv RC50 rubber track loader. I am looking to install lawns. Should I get a harley power rake, a rockhound power rake, or a roto-tiller with a york rake to level with? What are the pros and cons of each? Ideally, rototilling the soil to 6" will insure a good germination (even if you are going to add new topsoil). But the power type rakes would seem to handle leveling tasks much faster. How deep will power type rakes dig the soil? Also, is there any such attachment that will fit my loader that will dig and overseed an existing lawn? Thanks for the info.