Part 3: Buck sets the riders up to jump a series of jumps on a circle, and most of them have immediate issues with their horse falling out between fences. He explains the idea that they must push the horses into the outside rein rather than just pulling, which is causing them to fall out. Buck encourages the riders to use the half halt, but reminds them that doesn't mean pull back, but rather it means position and balance the horse so they can be easily guided to where they need to go.