He did it once, a legitimate spook, and caught me off guard. I ended up bailing off of him once he took off at a full gallop down the arena, because I couldn't stop him and didn't want either of us hurt.
Now, it is getting worse. He learned he could do it, and got me off, and just the other day he bolted from a stand still. Flat out just took off like a bat out of ****. That is how I know it is now a learned behavior and not something underlying. I have been using the same tack for as long as I've had him, and I've had vets approve it & also chiropractor work done on him. No injuries, etc.
He just flat out learned a new trick, and I'm beyond frustrated.
How do you fix a horse that bolts? I really hate this habit. Bolting and rearing are two that I said I'd never deal with. But lo & behold... I am now.
In all my years I've never had one do it this badly.
Where do I go from here?
I've thought about a bigger bit, as I only ride him in a plain eggbutt snaffle. I thought about a running martingale to give me that extra leverage so he can't get his head up, brace & grab the bit.
I've been told to spin him, one rein stop, as soon as he does it. And then I've been to put a western saddle on him and make him keep galloping until I say to stop, to make it not so fun anymore.