I just purchased an ISH last week and he arrived at the barn Friday. I have been trying to let him get acclimated and settled before doing anything, so he has only gone out to graze and was lunged for a few minutes today. He came from a smaller barn and the wash racks at my barn are a bit smaller than where he came from.
It took a good 10 minutes to coax him into the wash rack today after some rearing, head throwing, and flat out refusals...but I thought he had settled down. After about 5 minutes of being in the cross ties he freaked out, trying to rear and pull the ties from the wall. I am afraid it will be a bad experience for him and he will always be fearful of the rack...not very convenient for either of us.