Very late to this thread but just reading it now.
My one and only very short boarding experience (bought a horse through the trainer at a lesson barn in December and boarded until spring before bringing her home) was terrible.
I knew the barn as we had lessoned their for some time, but while they had turnout paddocks, they just didn’t use them. As in, it’s too time consuming to turn horses out, so we don’t.
I had no idea. If you wanted your horse out, you had to do it yourself many days if they were “too busy” cleaning stalls. Which basically meant that sometimes horses went out for an hour, and sometimes they didn’t go out at all. For days at a time.
I get that it’s time consuming - but on the other hand, it sure makes cleaning stalls faster when there isn’t a horse in them. So…maybe actually worth it…but the trainer actually believed that horses didn’t like turnout. (And, when you just chuck one of them out alone, it’s not surprising that they might not want to be there by themselves while all the other horses are in the barn.)
Another barn I took lessons at had a great system for turnout and stall cleaning, and the horses were out every day unless it was extremely hot or extremely foul outside. I would have boarded there, but the trainer wasn’t good so that was too bad.