Hello, I have a problem with my 7 yr old OTTB gelding. While trotting, if I put ANY leg contact on, he'll start hopping (sort of like a half-trot/half-canter). Also, he's always got his head jacked up in the air, which I can't fix unless I can put leg on him. He is also a little speedy, so I often have to use half-halts to slow him down. He is ridden in a full-cheek copper snaffle.
I just want to be able to use my leg without him hopping, and hopefully be able to lower his head.
Any suggestions will be much appreciated, and I could also put a video up later this week to show what he does.