Q&A: Jumping combinations

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Q: I am a small rider and I ride quite a large horse (16.2hh). He is a fantastic jumper, but I find it difficult to shorten his stride for doubles and trebles. He tends to run on, sometimes even taking a stride out, and knocks down the second or third element. I ride him in a three-ring gag snaffle, which he goes nicely in.Are there any exercises I can do to help shorten his stride?

SJ trainer John Smart replies: “Try the following exercise, which will enable you to work on your own technique as well as that of your horse.