How do you keep a rope horse from ducking left or right leaving the box?

A horse that ducks left or right leaving the box is failing to travel a straight line in the most critical three strides of the run, and the cause is almost always one of three things: the horse has a physical tendency to drift to one side due to stiffness or a straightness problem in its general training, the box itself has taught the horse to angle toward where the cattle typically go rather than leaving straight, or the rider's body position and rein use during the departure are inadvertently steering the horse offline. Straightness problems that show up in the box departure almost always exist throughout the horse's training — a horse that ducks left leaving the box typically also drifts left through lope departures, run-downs, and straight-line work generally. Fixing the departure requires fixing the straightness in the whole horse through lateral work, shoulder control exercises, and consistent straight-line riding at all speeds. A horse that has learned to angle toward the cattle during the break — usually because cattle have consistently left in the same direction from the same pen — needs exposure to cattle that leave at varying angles, plus box departure practice in arenas where the horse cannot predict the steer's direction. The rider's contribution is often overlooked: many horses duck in the direction the rider inadvertently weights their stirrup or tips their shoulder during the departure. Film your box departures from directly behind and look at your own position before concluding the problem is entirely the horse's. Corrections that address the horse's straightness without the rider also cleaning up their own position in the break will produce limited improvement.