Andy Jorgensen said: Save yourself some trouble and get a Core Collector from TurfPride. I promise it will change the way you aerify.
I will almost second Andy's qoute. We still pretty much aerify the same way with a Core Collector, as we did before, except with less work, I mean a lot less work cleaning up. (I think Andy will topdress before any hole punching, but I'm to old and stubborn to change that part of it.)
Mel