Why does my heel horse fade away from the steer?

A heel horse fading away from the steer leaves the heeler stretched and reaching for a delivery that is too far from the steer's hind feet to be reliable — loops that should be catchable misses become the result, and catches that do happen are often single hocks because the angle is too flat for the loop to pick up both legs cleanly. Fading is the mirror problem of crowding, and like crowding it is rooted in lateral control: the inside leg is not holding the horse on the correct lane toward the steer. The two common causes are a horse that was over-corrected early in training for crowding and learned to stay wide as a default, and a horse that is genuinely uncomfortable running at close range to another moving animal and creates distance as self-protection. Both require that the horse learn close-range running is safe and unremarkable. For the over-corrected horse, encourage it toward the steer rather than away from it — inside leg pushes the horse's body toward the steer while the horse stays straight and parallel. Reward the horse for holding the lane at correct distance rather than correcting it only when it drifts wide, which is the pattern that trained the fading in the first place. For the horse that is genuinely anxious about proximity to the steer, work on slow cattle at close range in a relaxed, low-pressure environment until the horse habituates to running alongside without tension. The horse that fades late in the run — starting correctly and then drifting wide as the heeler swings — is often reacting to the rope movement: desensitization to the loop swinging on the inside of the horse's body resolves this specific version of the problem.