I am considering buying a tiller for food plots. The soil is rocky, but I will till only top several inches to avoid jamming the tiller. The walk behind kubota tiller I use for home garden can be used with tines running forward or reverse. Reverse does a better job of breaking up ground. This machine unfortunately is not big enough for 2 acre food plots. Can tillers run off PTO be run in reverse rotation? For that matter, can PTO rotation be reversed?