The problem with using a halter that won't break is that if you can't get the knot undone, something is going to break. Either the halter breaks and you have a loose horse, or whatever you tied the horse to breaks and you have a loose horse with a chunk of wood dragging behind it. I'd much rather have a horse break a halter than yank off part of a hitching post and drag it around, get tangled in it and break a leg. I've heard some pretty horrific stories about situations like that, including one idiot who tied his horse to a cinder block and the poor thing ran off with it.
I don't think many horses will develop a pulling habit out of one or two times where they panic about something and pull back. That's just my experience with the two horses I've had, maybe others pick up the bad habit quicker.
If for some reason they do, then that's an issue that you deal with in a situation you have control over, not in your everyday setting while you're tacking up or at a show. I'd much rather deal with a pulling problem than an injured horse.
Last edited by TheVelveteenPony; 10-23-2008 at 05:21 AM.