I have a pretty sensitive mouthed horse because of a past owner was pretty abusive with their bits, anyways its hard to find a bit that doesn't bother him. At home I ride him in a little S hack, but I'm afraid that when we go to a show he's going to be hard to stop. [They don't close the gates once you enter the arena.] I was reading online somewhere where this girl used a 'Happy Mouth' bit which is at my understanding a English bit. Just wondering you guy's opinions on it and if any one of you have used it on a barrel/pole horse. Thank you!