Part 4: The group works on two brush fences where the horse can't see the second jump. Boyd encourages the riders to focus on accelerating on the last stride, as they school the horses to gain confidence and not lose focus when they see the second fence. The riders practice some gallop between fences, and Boyd reminds them to keep longer reins and guide with their legs and body language more to avoid breaking the rhythm. He works with a rider who takes a fall when her horse doesn't have enough time to look at the fence.