Allison posted a useful video. I happen to be riding a jumping horse at the moment who was used to rushing- people who rode him often had trouble stopping him if he was cantering or trotting. I get him into the trot and I first ask with normal aids to transition back to walk. If he doesn't respond to these, I use the pulley rein. After you repeat this a few times, the horse will get more sensitive to your 'whoa' aids and you won't have to go to the pulley rein. Try this a few times before you jump first so you and your horse get the hang of it and he is responding to a normal cue (start with trot to walk, then do canter to walk etc). Then, take the jump and a few strides after landing ask him to trot or walk with normal stop aids. If he doesn't, use the pulley rein. Like the flat work, keep doing this until he will listen to you calmly so you don't have to use the pulley rein anymore and he maintains a regular speed instead of rushing. This method will achieve both of the things you wish to accomplish: he will be sensitized to your aids, and he will slow down.
"The trouble with the world is that the stupid are certain and the intelligent are full of doubt"
Last edited by roro; 01-28-2010 at 10:27 PM.