I know this is an old post, but I could have written this!  My horse has learned to pull through the tie ring and he will only pull back when tied to the trailer (so training him in trees or on thinking posts won't help).  I wondered if anyone had success using the innertube on the trailer.

From my experience and perspective, there is no reason that an inner tube tied off short to a trailer ring would not work.

this works to laiart  rope around the girth up between leg thru halter  and tie  he sets back cuts off on air  he will come back  up but alway keep a sharp knife handy

If you are using the tie ring and they have learned to pull through it double it when you run it through the ring, making sure the curve is to the back.  If you have a dedicated puller they can still pull, get release even with it doubled and not pull the lead out.  Also sometimes it could be the lead and the material that it is made of that causes it to pull through without any resistance.  I have an old Cunningham training halter with a 14' lead.  My worse puller would quit pulling before she got to the end of the lead because of the length and friction.  Before the tie ring I did use an inner tube and still have a patience pole with an inner tube.  I also carried one in my horse trailer and set it up so I could put it on a tie on my trailer.

Nope. She tore up the inner tubes too.

I've had to do this to a couple. I kinda hate to do it - but it gets the point across and they don't get relief until they stop. I really think that slip tie type rings are counter productive. I've had ones that would keep pulling for 50 foot because there was still some pressure. Once in a while they just have to find out they cant whip/outpull something. The larait rope and a homemade brad tack halter are my last resorts for the nasty pullers.

People think I'm crazy for doing it, but I will always use something that wont break if I'm teaching a horse to tie. Mine learn by being tied to an overhead cable with a heavy duty Amish made halter. And I've actually got a system where I can untie them while staying well out of the danger zone. My stuff doesn't break - I cut one loose if a horse gets in a bad jam. I always pack a super sharp knife and I don't walk away. Even if I just have to set and read a book.  I will put a regular "breakable" halter on one once I'm sure the lessons are learned especially if i can't be around to cut. I've only had one puller in my life and I think it's how I start them.