My TB, Charlie, is a wonderfully trained horse. He is soft in the mouth and goes in a copper D ring snaffle and that's all he needs when doing ring work, jumping, even hacking around the field. However, yesterday I took him to the beach for the first time and he was a nightmare. He was fine on the way out but as soon as we turned around to head back, he was like a ticking time bomb and it was all I could do hold him back. But I refuse to ever let a horse go faster than a sloooow trot when we're heading back so instead we did 6 miles of sidepasses, performing the passage, airs above the ground- all the while snorting like a freight train. It was ridiculous. He's an ex race horse (retired 7 years ago), but even when we were in front of the other horses, he was still wound up. He was not responding whatsoever to my seat or legs, and that's all I usually need to use- most of the time I think the reins are just for decoration on him. But it just did not seem to be enough and he was very unfocused on me, not matter what I asked him to do. I tried half halts, circles, serpentines, backing up, heading into the water, all to no avail. Any ideas on a bit I could use just for trail/beach riding that would help get my point across a little more clearly? I am definitely not the type to switch to a harsher bit on a whim, but the way he was acting was downright dangerous at times so any suggestions would be appreciated. Thanks!