How do you ride a horse through a spook safely without making it worse?

The moment a horse spooks — the sudden explosive shy, spin, or jump sideways that happens before the rider has any warning — is a test of the rider's physical position and their trained responses, and Clinton Anderson teaches specific techniques for riding through spooks that both keep the rider safe and avoid rewarding or escalating the spook behavior. Anderson's primary physical response to a spook is to stay deep in the seat, push the heels down, and look up — not down at what the horse spooked at. Looking down at the triggering object shifts the rider's weight forward and onto the horse's neck, which is the position least suited to riding out an explosive movement. Looking up and keeping the weight back and down keeps the rider in the strongest possible position for any direction the horse moves. His behavioral response to the spook is to immediately pick up one rein and put the horse on a circle — not to punish the spook, but to give the horse's feet a directed task that replaces the reactive movement with purposeful movement. A horse circling is a horse whose feet the rider controls, which is safer than a horse that is allowed to complete its reactive spin and bolt in any direction it chooses. Anderson specifically teaches against the common rider response of pulling back with both reins after a spook. Both reins pulled backward invite the horse to rear — which is far more dangerous than the original spook — and they remove the lateral bend that the one-rein response provides. Warwick Schiller adds an important observation about the rider's emotional response: a rider who gasps, tenses sharply, grabs the mane, or shows obvious alarm when a horse spooks confirms the horse's assessment that the situation was alarming. Maintaining a calm, loose body through a spook — to the degree that is physically possible — gives the horse the most useful information available: that the rider was not alarmed, which suggests the stimulus was not actually dangerous.