I will often use lungeing to teach a horse to stand still; it's the premise of making the wrong thing hard, and the right thing easy. Horses are lazy by nature, and if you are quick to bring on the correction (in this case, lungeing), the horse would learn quickly, that "if I fidget, I have to work...I better stand still." I use this on any horse I train to tie quietly. I will simply loop the lead over my arm and do what I need to do around the horse, grooming, picking feet, etc...if he moves, I am already in a position to move his feet, and move his feet I do. Always use a lead of atleast 14 ft. As well as a rope halter, since this is harder for him to lean on. Make sure you have taught the horse to lunge properly first, and it is always wise to work in an area you can safely lunge the horse. Now, when I lunge a horse, I don't just send him in one direction endlessly forever...this is where people think lungeing is a meaningless exercise in teaching a horse anything; change directions OFTEN!!!! Make the horse work!!! Change gaits often, as well, and incorporate backing often, especially if the horse tends to want to rush in to meet you when you stop him. When he will stand well with the lead over my arm without moving, I will start dropping the line (ground tying). If he moves off, I am still able to grab the lead and work him, because he's not held fast, which is my biggest problem with 'corrections' while a horse is tied...if he reacts to your correction, and you get in the way of his reaction, you and he could be injured. I like to avoid that possibility. It's the difference between invoking that fight or flight instinct.