Mike, you will hardly be the only one doing it. I haven't done well selling it. Seems like fert companies talk them into core aerating and then I end up making the money up on fixing irrigation wires and pipes. I guess you can't win on both sides. I have a dethatcher though but it verticuts I guess this is what you guys are talking about. Hard fixed blades and not the thin wire kind. It use to be used on my grand parents Bermuda after the rye starts to die out.