Thanks for all the suggestions!
Pain: he has been vet checked and chiro’d, and passes both. Chiro comments on how loose and flexible his legs are. His neck? Sometimes needs adjustment and I think it is from head-shy/pulling back. But that said, I guess we do not know if there is some pain. He is 12 and an ex ranch horse, there could be something we can’t see. I can try the bute, not a bad idea.
Patience: I tied him to a patience tree (a real one). He fussed for about a minute and then stood fine for an hour. I think it is the cross-ties and people working around him that triggers him. In the case of the farrier, we are afraid of him nipping rather than nuzzling her back, so either me or her apprentice seem to be around his head, and that seems to invite his mouthy behavior.
I don’t leave him cross-tied for long because he will paw and I don’t want to ruin his shoes. Do you think it is okay for him to paw on a rubber mat until he stops fussing?
Other farriers: I have only had two farriers since I purchased him, and yes, he has done it to both and their assistants.
Clicker training: I have done clicker training with him, and he is very food motivated. I haven’t done clicker training on how to stand still. Usually it is a reward for good transitions. I will need to read about how to do stand still.
Handling feet: This will be the harder part. He will let you hold them and bang on them for awhile – just not as long as a farrier would. I would like him to hold his feet up himself, instead of me holding them. Need to figure out how to train for that.
He was shod yesterday. I made sure to exercise him before she came, and I switched to using his rope halter vs his web halter in the cross ties. Farrier was also on a tight schedule, so she had “sterner” energy with his antics. It was probably his best shoeing – but still a PITA. The biggest being his mouthiness.
I have faith her method of disciplining, as she has a Hancock bred ranch horse too and is quite the horsewoman – and she said I am not being firm enough when he is mouthy. This horse is very head-shy – likely from being mouthy with prior owner(s) – and I have gone from hitting back, pinching his lips, letting him run into my elbow (hard), thumping under chin, 3 sec rule, hitting his chest, backing him up, etc – just everything, and he thinks it is “gelding games” and it just got worse. I did the best with staying out of range and ignoring it, hoping it would extinguish on it’s own. But maybe she is right? He is a tough horse and my trainer says “he is not easy,” and perhaps he needs stronger discipline than the average horse?
Her sternness while shoeing did lead to a better shoeing – he got quite a few elbows for being mouthy and for leaning on her – and it seemed to help. I think he could sense that no one had time for funny business.
This might be a crazy question – but is the behavior of pulling back immediately after trying to nip/mouthy a game? His pulling back means that he knows a swat or something is coming – if he were truly trying to nuzzle he wouldn’t pull back? I hate to say he has intent to play, but it sure seems that way.