Also on these boards
The chute: line up two or three jumps next to the fence; place extra practice jumps perpendicular to the first set of jumps creating a tunnel or "chute" effect; tie reins in knot just below where you place your hands; as you approach the first jump, drop reins and place on helmet, out to the side, or behind your back. Should help with balance, trust, and learning when to release.
I've had a horse do this to me. It was weird and awkward at first until one of the ladies who took care of him told me that he likes tall people (his trainer was tall). I am a tall person, but the horse was taller than me (he was a BIG chestnut Thoroughbred named "Big").