What is Clinton Anderson's method for teaching a horse to pick up all four feet willingly?

Clinton Anderson's method for teaching a horse to pick up all four feet willingly is built on the same pressure-and-release principle that underlies all of his training, and he begins with a specific diagnostic: does the horse yield its hindquarters from the handler's hand pressure against its side? If not, that yield must be established before foot-handling can be approached safely, because a horse that does not yield its hindquarters to light pressure will not stand reliably when a hind foot is lifted. For the front feet, Anderson begins by running his hand firmly down the horse's leg from shoulder to fetlock. This pressure signals the horse to shift its weight. When he reaches the fetlock and applies upward pressure, the horse that yields properly lifts the foot. If the horse pulls the foot away or leans, Anderson does not drop the foot immediately — he maintains contact until the horse stands still for at least two seconds, then lowers the foot. Dropping the foot the moment the horse pulls teaches the horse that pulling gets the foot returned. For the hind feet, Anderson is specific about positioning: he stands facing the rear, close to the horse's hindquarters, not to the side. This position reduces the horse's ability to kick effectively and gives the handler more control. He runs a hand down the gaskin and cannon, applies upward pressure at the fetlock, and when the foot comes up, holds it in a natural, comfortable position — not stretched out behind the horse, not pulled up high. Discomfort in the held position teaches horses to pull away. Anderson teaches handling all four feet every day during training, not just on farrier days. Horses that are handled daily accept farrier work with little resistance because foot handling is routine. Horses that are only handled on farrier day are being asked to accept a stressful, unusual experience with an unfamiliar person on an infrequent schedule — which is why so many horses are difficult for the farrier.