SLC made some really great points...I would just say to always tie your horse to something that can break. Nothing more solid than a doubled piece of baling twine; it won't break as easily as a single piece, and will discourage horses from pulling as they have to put some real effort into getting free (especially with the halter I mentioned). I'm not sure about the inner tube...I know Monty Roberts does that, and I have a ton of respect for him, but I've never tried it so I'm going to avoid giving advice on it. The blocker ring is great, obviously, except for a few drawbacks (see my previous post). Just basically never tie your horse to something that WILL NOT break. If you have to tie to a tree or solid post, do it in a leather or breakaway halter (nylon halter with leather or velcro inserts that break under a fair amount of pressure). There are risks everywhere you turn in the horse world...they are just very big flight animals who don't like being constrained, which we have to do a lot of. Remember that there are always risks no matter how foolproof the situation seems.
I totally agree with SLC and gottatrot...if a horse can hurt itself, it will. Always assume the worst. Sounds like more people need to join Pony Club...
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