My old horse used to land the jump, plow into my hand and take off. I know you said you know the just halt thing, but it really worked for me. One stride after landing the jump (so basically immediately) make her stop. Make her stop NOW. And make her stop straight. No running through the corner still trying to stop her. Back up a few steps until she gives if she's being hard in your hand. At the start I would set up the jump going across the short side so I wouldn't have much time to stop before I hit the arena wall. It helps because if you can't stop the horse, usually you can still keep her going straight, and she'll stop when she gets to the wall. Then you turn around and trot the same jump. You keep doing this, trot the jump, jump, stop, turn around, trot the jump again, until she figures out that she's going to be stopped after the jump, so there's no point in rushing after. It also helps teach the horse to stay straight after a jump. Once she's doing this softly, let her canter around the corner, trot, and trot the jump again, and ask for her to stop. You can keep doing variations of this, mixing it up whether you turn left or right after the jump, whether or not you stop, or whether you trot or keep the canter and come back to the jump again cantering. Her reward for going softly and with a nice pace after the jump, is that she isn't interrupted and doesn't have to stop. Just at any point, if she feels like she lands the jump and rushes, stop straight, turn around, and trot it again. This exercise has helped me with a LOT of different horses, and for different reasons, not just rushing.
If you want to practice controlling pace in general, I like to practice with just ground poles. I'll set up 2 ground poles as if it were a 4 stride combination, and practice getting 3 strides, 4 strides, or 5 stride in that distance. This really helped me with a horse who wanted to be really long and strung out. If I left her be, she would usually get the striding anyways, but getting her to compact to the 5 stride, or to go forward off my leg with punctuality was where we needed more work. The key is to come to the first pole with a nice canter like you would a jump, and as you land that "jump" to adjust the stride. You can also practice stopping after the second pole like before if she gets rushy with this.
Both these exercises help teach the horse to be keen, handy, and mostly listen to the rider.
Last edited by ponypile; 05-11-2013 at 01:02 PM.