To hamper the movement of a horse by tying two feet together. Keep an extra long lead rope on the horse. Stay with the horse. Do not leave him alone. It requires fast moves on your part to keep the hose off balance if he tries to travel and keep yourself out of harms way positioned near the hind quarters.
Some horses take to it faster than others.
After the session of introducing the hobbles, the horse will quit fighting and just move his rear end keeping his front feet planted, doing forehand turns. Then take the hobbles off, tie the horse to a hitching post and put the hobbles back on. Let the horse stand there for several hours. If the horse paws at the ground you can break that habit. If the horse spooks at something, say plastic, you tie him, hobble him and sack him out with a plastic bag.