I'd be uncomfortable about the fact that your trainer has so many different horses riding in the same bit. As an "experienced" horseperson your trainer should be aware that all horses don't work the same in the same bit.
Some horses love a plain snaffle, some hate it and perfer a french link snaffle. Where I ride, each horse has a different bit and most of them are VERY different. Doc (my lesson horse) goes in a Junior Cowhorse bit with a copper roller, but Dee goes in a thicker, slow twisted snaffle combination bit with a rawhide noseband. Dolly rides in a low ported curb, and so on. And they all ride well, and are extremely happy horses.
I'm not against a twisted wire bit, but I wouldn't put it on my own horse. Especially a double. As someone mentioned above, it's very unclear, with multiple points of contact. It completley kills any finesse.
Honestly, I'd change your bit. If your horse rides in a plain snaffle, why upgrad? The only reason I see to change bits if for more finesse, not more strength.
Posted via Mobile Device