In this program Cameron Meissner councils a student on the importance of staying away from penalties when doing the reining turnaround maneuver.
Reining spins or turnarounds:
Beginning from a standstill, the reining horse spins 360 degrees or more (up to four and one-quarter full turns) in place around its stationary inside hind leg. The hind pivot foot remains in essentially the same location throughout the spin, though the horse will pick it up and put it down as it turns.
How a reining spin or turnaround is judged
Reining spins are judged on correctness, smoothness, and cadence. Speed adds to the difficulty and will improve the score of a correctly done spin. A reining pattern requires at least one set of spins in each direction. Horses must stop the spin in the designated place or be penalized for over or under spinning.
Cameron Meissner explains some techniques to sharpen the reining turnaround shut off and the underlying equine psychology.