How do I develop the correct lope for working western rail?

The working western rail lope, like the jog, is judged against a natural, forward, working horse standard rather than the refined, slow lope of western pleasure, and developing it correctly requires the same approach of encouraging natural forward movement rather than containing it into a specific show ring frame. The correct working western rail lope is a genuine three-beat gait that covers ground comfortably and looks sustainable over distance — not the extremely slow, collected lope of the pleasure ring, and not a racing gallop, but the natural, balanced, working lope of a horse that could travel miles in comfort. Balance within the lope is the quality that distinguishes a correct working western rail lope from one that simply looks busy. A balanced lope is one in which the horse carries itself with engagement of the hindquarters, a freely swinging back, and a natural elevation of the forehand that allows ground coverage without labor. This balance is evaluated against the individual horse's conformation and natural movement rather than against a fixed show ring standard. Developing the correct lope requires the same foundational approach as developing the jog — open environment work that allows natural forward movement, regular conditioning that builds the physical strength to sustain the correct lope pace comfortably, and training that rewards the natural way of going rather than containing it. A horse conditioned through hill work, open field loping, and varied terrain develops the balanced, natural lope that working western rail rewards. Lead correctness is evaluated with the same standard as any other discipline — wrong leads are faults regardless of how naturally the horse is otherwise moving. Confirming correct lead departures in both directions, and developing the horse's physical balance and suppleness on its more difficult lead, is training that directly affects the score every time the lope is called for.