Through word of mouth I have had many come to my place for boarding after their show careers were over for a variety of reasons. Some even came still wearing the big show shoes. The main problem I see with many of the show horses is bad feet which doesn't become apparent until the shoes are removed, most have had white line disease of varying severity. Once that problem is cleared up they no longer need shoes & have great feet.
I've found the ASB the easiest horse to go from a show life to trail riding as they love adventure but will still turn it one when we go to smaller shows for fun.