I mow my septic field twice once in June and again in the fall. It's the only grass I have other than some paths. But here is a question. I have a 60" finish mower. I want a new tractor, more HP , and think I will sell the finish mower with my current tractor. I also have brush to cut back and I think I will get a 60" rotary cutter. Does a rotary cutter cut grass ok ? The septic field is pretty rough and we do not intend ever to have a lawn.