The turn on the haunches (Dressage move) and the Turn/Spin ( reining maneuver) are very different in many ways. The Turn on the Haunches is a slower maneuver in which all 4 feet continue to move. There is no pivot foot like in reining. In reinnig the turn or spin is a fast forward maneuver in which you should have a pivot foot. While that foot can and often does move it does not in the same way at it would in the turn on the hauches.
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