Part 4: Boyd has the riders jump around a course, putting into action everything they learned through the gymnastic exercises. He reminds them to always jump the first fence as a change of direction when possible, as this encourages the horse to be straight over the fences. Boyd works with each rider, challenging them to lengthen and add between fences and helping them work to their individual horse's strength. He reminds the riders that training horses is all about opposites, so if they're stiff he focuses on suppleness, if they're rushing he focuses on relaxation, and so on.