I bought a commerical flail mower, so it has a door on the back side I can open. It can be closed, half open or fully open. When I cut heavy thick material, I usually open it wide open. That prevents my 1026R from bogging down and allows me to cut it and a decent clip.

What I also like is the big roller on the back acts somewhat like a cultipacker, so if I have a field I can broadcast seed into before I cut it, I can basically run over it and pack it and lay a layer of mulch right on the top of it. It's the best I can do without spending the $ on a drill.