Part 4: As they progress over the fences, the horses begin to take them seriously at the walk. William supports the riders in staying straight and getting comfortable not knowing exactly how each fence will go. He encourages them to keep a wide hand, and use this to funnel the horses straight to the jump as they encourage them to draw them in on approach. The group tries some spooky fences and a water tray at the trot, working to keep an efficient position that's secure should something go wrong.