crosstied boredom

So theres this shetland pony that I like to help 'train' with my neighbor, and he gets bored, really easily. When we bring him in to groom, (he lives in a pasture, so he's ALWAYS dirty) we tie him up. He stands for about a minute, then starts to move (which is a pain when you're trying to pick his hooves or fit splint boots) so I had to crosstie him, loosely at first, since he doesnt have much experience with crosstying. Then he starts chewing the crossties, and I tighten it so he can't move his head, to either side. What can we do to keep him to stand still!! I would rather just tie him, but he chews either the rope or me! (he gets a smack for chewing on people, and the rope) what should we do?????

Please help!!!!!!!!!!

I have seen people but a rubber thingy hanging down from the halter at just the right height to let the horse chew on it. Keeps him busy.

And, you can try the "if you don't want to stand still then you can work" approach. Bring in pony, stand and ask pony to stand. If and when pony starts to move, pick up lead line (make sure you use a LONG one) and make pony move around you, like lunging him. Make him move briskly. Then offer him the chance to stand. When he can't stand anymore, ask him to work again. Then offer to stand. Do this over and over, and it may take 10 or more times, he will eventually choose to stand. Then maybe no crossties will be necessary. Don't make it a "punishment" for moveing. Just think, "ok, you need to move, that's ok, but let' it be really moving!" Let Pony choose to either work or stand, nothing in between. He will eventrually chooose standing.

This is far more important than grooming, so give yourself and your friend time to do this and forget about grooming. When you get him to stand quietly for about 10 minutes, reward him with a light pet or some grooming or a treat and let him go, even if he is still dirty. Being dirty is no crime.

That makes sense!
Thanks!!