How do I develop the correct lope for western pleasure, and what does a winning lope look like?

The western pleasure lope is a slow, three-beat gait that should appear effortless — a horse moving in a smooth, rhythmic cadence that covers ground without appearing to rush, with its hind legs tracking up toward or into the prints left by its front legs and its entire topline swinging fluidly with each stride. The winning lope is one that makes the judge feel, even from the rail, that sitting it would be comfortable and that the horse is working well within itself rather than being held back or pushed forward to maintain the pace. The lope should be a true three-beat gait. A common fault in western pleasure horses is a lope that becomes four-beat — where the diagonal pair of legs that should strike the ground simultaneously in the second beat of the gait split apart into two separate footfalls. A four-beat lope produces an irregular, ambling rhythm that experienced judges identify immediately and penalize. Developing a true three-beat lope requires enough forward energy to maintain the gait's natural sequence, which means the slowness of the western pleasure lope must be achieved through cadence rather than through reduction of energy. Teaching the lope begins with establishing correct lead departures that are smooth, quiet, and on the correct lead every time without hesitation or multiple cues. A horse that departs on the correct lead cleanly from a light cue is a horse that can be brought back to a slow, balanced lope from that departure rather than spending the first several strides recovering from a scrambled or incorrect start. The correct slow lope is developed progressively — beginning at a natural working lope and gradually finding the slowest pace at which the horse can maintain correct footfall, balance, and rhythm without breaking to a jog or losing the three-beat sequence. That threshold is different for every horse, and respecting the individual horse's athletic ability is essential to developing a lope that looks correct rather than one that is technically slow but mechanically broken.