I have recently started a landscaping business and have quickly realized that I need a way to break up hard soil. I have been using a 3 PT. hitch tiller and box scraper, but I am not happy with the results. My searches have me wanting a power rake. I have used the search function and found a lot of useful info, but I have not been able to find out a few specs. If one of you has a power rake, maybe you could help me out. First, at what rpm does the drum turn? I am guessing about 200 give or take? Secondly, what diameter is the drum on most of these machines? Third, how many teeth on a 6 foot rake and how close together are they. I have tried to find a local dealer or rental place to test one but have had no luck. I am looking for a 3 pt. hitch model. Any info would be appreciated, Thanks