Horse learned to untie himself...
I usually don't tie my horse. He stands very well for all stages of tacking up, unless there's clover to be found.
Lately I've taken to harnessing him in a large field close to where I keep his cart. This field also happens to be very lush with delicious greenery, which means I have to tie him if I want the breastcollar to stay in place long enough for me to attach the traces to the cart. If he puts his head down to eat, he'll end up with the breastcollar around his ears. It's no bother to him, but it drives me nuts!
The last few times I went to tie him, he immediately pulled the free end on the quick release knot and kept on stuffing grass into his face. It's not like he fiddles with the knot with his teeth until he gets himself loose, he deliberatley pulls the free end of the rope and immediately unties himself. Great...
He has a very reliable head up cue by tapping the underside of his neck, and he knows eating in his bridle is a big no no. But I can't have a horse that just unties himself! Minor annoyances of the breastcollar aside, it's a safety hazard! He's not one to wander off, but I don't want him getting any ideas either.
Does anyone have any ideas on other ways to safely tie this horse?? Ideally I'd like to straight tie, though repairing the barn cross ties is an option if he keeps out smarting me. Maybe if I learn a few different types of knots for tying horses, he won't be able to untie himself as quickly.
I've also been considering a blocker tie ring, but I doubt the barn owners would be too pleased with me installing a tie ring on their property. Plus, I would always tie him to the steel round pen in the field. Not exactly something you could drill into easily. Could I get away with making a tie ring "portable" by attaching it to some nylon webbing with a steel clasp on the end?
Any suggestions are welcome!