@Sparrowette - I understand your points. But as horsemen, shouldn’t we advocate learning and education and problem solving over sending the horse to the trainer for a fix? Because the bitting problem is not likely the only problem this horse will ever have. And a post of a hundred, or even a couple hundred, words on a bb will not do the same thing as a systematic education program will, and I feel that most people can understand and apply the concepts without having to be an expert rider or even particularly brave.
OP already had the horse with 2 trainers, and the discussion appears to be about what the horse “likes,” and the answer should not be “let’s appease the horse.” Training horses is a lot of work, and sometimes when you encounter a problem, you need to go back and figure out what lesson the horse really did not get, and fix that.
Some trainers are not really trainers, but simply good riders, and although they can ride problem horses, they don’t really understand the problem the horse is having and don’t make a behavioral change. And you don’t know this until you’ve spent the money and have sent the horse to yet another barn for training. And then you get the horse back and the horse regresses because you don’t ride as good as the trainer, and the trainer was not able to identify the problem and tell you how to keep it fixed.
I just advocate for everyone being a better horseman; it’s better for all of us, especially the horses, in the long run.