thanks for the suggestion. I already burned out a Betst flair mower bearing mowing this property. The manual only called for two or three pumps of grease every 8 hours of use. From reading this thread, it looks like it should have been loaded up from the start. I have emailed Keith on it, to see if it still covered under warranty (only 10 to 15 hours total on the flail mower; bought last year; two year warranty. Emailed him some time ago, still waiting for reply)
The Betst mower cut well and was easy to control on a Ford-new Holland 1920 (32 HP, 29 HP at PTO). I really liked it until the bearing blew out.
I have been looking at getting a Land Pride or Bush Hog rotary cutter, but after reading this thread, I think I will stick with a flail mower (I am waiting for response from Keith on the bearing for the Betst mower).
Perhaps a heavier duty flail mower would be better ( except for the money -- but spending a lot of time fixing a flail mower is not exactly what I planned).
I'll get on picking up this property (it was recently purchased by a non-profit group, and I have just been helping them out, as it is located in a very beautiful area next to the river, with lots of wildlife, etc.).
Would a heavy duty flail mower do better with the rocks, bricks, etc?