Brown under saddle is very responsive and listens to leg, but sometimes when he chooses to do something, he's got it stuck in his mind he will do it, and will hardly yield. On the ground, his manners are terrible. He doesn't back up, and it takes a lot of work, and a lot of different methods to make you his leader [Our trainer's sister came for a weekend and worked with him, it took her nearly an hour to figure out a way to make him back up and respect her space.] You can jab him, you can hit him with the lead rope, you can give a swift yank to the halter, nothing. He just blocks it out like it's nothing.
The worst part to him is that he bites. A lot. So far he's gotten nearly everyone who's worked with him at least once. When he's being brushed, he'll try to bite. When he's getting his girth tightened, he'll try to bite. When you're just sitting on him and if he's wanting to go and you're not letting him, he'll turn his head and get your toe. If you remove the halter while turnng him out, he'll try to get you there, too. When turning him out and he tries this, I put the halter back on and give him a good whap with the lead rope a couple times and turn him as discipline. Usually he gets it in his mind not to do so again.
When he makes attempts to bite, we usually bop him with the halter, but it just annoys him. Smacking him on the neck does nothing, either. It just annoys him further.
Personality wise, I dislike him and generally don't work with him, but I would like some hints for the others who actually stick it with him.