How do you get a head horse to finish the corner?

Finishing the corner means the head horse completes the full arc of the turn with forward momentum and body position intact — not flattening out, slowing down, or drifting wide in the second half of the turn where the heeler is making the delivery. A horse that does not finish the corner gives the heeler a deteriorating shot: the steer's hind end swings wide, the rhythm breaks, and what started as a makeable run falls apart in the last two strides before the delivery. The most common cause is a horse that has learned the turn is the end of its responsibility — it initiates the arc correctly but releases forward energy once the steer is pointed left, drifting rather than driving through to completion. The correction requires that the rider maintain leg throughout the entire arc rather than releasing drive when the turn begins. Many headers apply leg to initiate the turn and then go passive through the second half, which is exactly when the horse needs to be driven forward to complete the corner. Practice the turn on slow cattle with deliberate emphasis on the exit: ride forward through the turn and past the point where the horse normally flattens or drifts, pushing the horse to complete the arc with the same energy it started with. The heeler's position after the run is the most useful diagnostic — if the heeler is consistently scrambling or late, the corner is not being finished. If the heeler is set up correctly with a clean shot, the corner is right. Use that feedback to calibrate how much corner the horse is actually giving rather than assuming the turn is complete simply because the steer is pointed in the right direction.