I have a inexperienced green horse to a show recently and it blew his mind and he just ran round in circles for pretty much the whole time and he wouldn't settle. He has been to other yards for lessons, been ridden in different arenas and been to a horsemanship clinic (with other unfamilliar horses) etc but this obviously was not enough to prepare him for this environment! Has anyone had a similar experience and if so how did you approach getting your horse used to this environment in a safe controlled manner as i've never had a horse that hasn't eventually settled down.