Consistent contact that does not pull is the key to establishing respectful boundaries which tell the horse where not to go. When leading a horse in hand, gather up the slack in the lead rope or reins and push the horse forward into your contact. The lead rope or reins should not go “loopy” or loose while leading in hand.
When leading a horse in hand, stay at the shoulder of the horse. If you cannot see the front toes of the horse out of your peripheral vision while leading him, then you are too far forward of the horse’s shoulder. Staying at the shoulder allows you to activate the horse’s “go” button easily.