I have a mare that seems to not like most bits. She tosses her head, acts hyper, and gets moody when wearing the gentle Kimberwick she has. When ridden in a halter and lead rope, however, she is much calmer and happier. I am considering a bitless bridle for her. My friend said that bitless bridles are illegal in some shows (Rocky Mountain shows) so I'm wondering about Western pleasure.
I'm also considering a gentle bit with rubber in it, perhaps. But I'm willing to take suggestions, considering the bit isn't crazy expensive. Please include name.
The bit also must come in pony or small horse sized, since my horse is cob and has a very small mouth.
Thanks for your help!