Tyler was great with other horses but refused to leave the yard if there was even a chance that he would be alone.
We combined in hand walks with having somone stand at the end of the road while I rode him(first of all only a few metres away, building up the distance by the week) and slowly encouraging him to go out of the yard himself. The person at the end of the road had a carrot or something as a reward for him going so far himself. So far we have managed to hack out around 5 times ourselves. He still has his moments, but I usually stop, et him calm down, push him on a bit more then have a supply of polomints to give him en route.
As Tyler had confidence issues it wasn't so much of a disciplinary matter, but a slow confidence buidling process.
I dont know if your horse just won't go out at all like Tyler or if she just isn't overly happy about, but hope that helps in some way.
Jenny and Tyler
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