If I can interject, I can share why I very much dislike the TT. Obviously I dislike the mechanics and construction of the bit but my main reasons (that I've come across in real life, not on the internet) for hating it are as follows:
- People think it's a "snaffle" due to marketing and direct rein in it because "it's a snaffle with more brakes!!"
- People think it's the best bit for starting horses in, since it's a "snaffle". I feel this sets the horse up for failure down the road when/if any kind of finesse is wanted.
- People put this bit on horses ridden by beginners because "it's so gentle". They let these beginners pull and pull on the horse's mouth because "the TT is gentle"
- My final reason is because this bit is in common use because it's "so nice". If it were more rare, like a twisted wire bit or a mule bit (around here) is, I wouldn't care about it at all beyond disliking it.
If you want to use a TT and you neckrein in it, never direct rein, have a loose rein 90% of the time, and your horse likes this bit then you're doing it totally right and I have no bone to pick with you.
I mean, I've ridden horses in a TT many times but they were horses that couldn't have been better at neckreining and I stayed 100% out of their mouth. For them, I don't have a problem with the TT. I still think there's probably something out there that's better on a horse-comfort level, but if the TT works well, there's not too much of a reason to change it.
My other factor (that I mentioned in my list) for being adamant against the TT is that it's in such wide circulation (and so many people are misinformed about it). If the Mule Bit was in wide circulation instead of the TT and people had the same feelings toward it that many do about the TT, you can bet that I would be as anti-Mule Bit as I am anti-TT. Or, if twisted wire anythings were around more, I would have a similar cow about them.
But, to me, the mere fact that I had a previous instructor (who was well educated in most other things) lecture me about the evils of a twisted wire snaffle I had found, then advise me in the same sentence to get a TT because "TT's are like snaffles, with more brakes!! They're the gentlest possible!" says that there's a problem with education regarding this bit.
Truthfully, I wouldn't care if TT's were super uncommon but since they seem to the "go-to" bit of most western trail riders, I think those riders should be at least properly educated about the bit they're using. If their horses truly like that bit and the riders respect the TT and stay off it, then I really have no issue.
That all being said, I really am not a fan of broken curbs of any style. I haven't had much expierence with many broken curbs but the experience I have had was always negative. I would never advise anyone to get a broken mouthed curb. I much prefer a solid mouthpiece on curb bits.