Cattlemens assoc here had one i used it several times helping other people i hated that thing it took 2 people to operate it as Dave said the butt gate in the front was a pain and the automatic head catch part is spring loaded so they had to hit it pretty hard, usually had to have someone up there pulling it shut as they put there head in(may have just been wore out) and deffinetly a head banger it was about 20 yrs old they may have improved some of that since then. i can do everything by myself from one spot with priefert.