Part 3: Catherine works with the rider to use less rein and instead turn with their vision and their seat. She points our most horses are happy to follow these aides, and in using them, riders can avoid constantly disturbing the horse with the bit. The rider has to focus on multiple problems at once while working on a serpentine, keeping the neck stable, maintaining the bend, and turning from the body rather than the hands. Catherine shares what many top riders know - the bit needs to be used to balance the horse, rather than knocking him off balance as is often the case, and she believes this is the way good riders become great. She also discusses single versus double jointed snaffles, and why she prefers the latter.