Terms for double jointed snaffle bit?
I want to research double jointed snaffles in an effort to find the best bit for my 4 year old mare. She is obviously uncomfortable in a single jointed snaffle, I assume the single joint pokes into the roof of her mouth, and obviously more comfortable in a double jointed curb, and the one roller snaffle that I already have.
So far, I have noticed the following terms: french link, Dr. Bristol, and dog-bone (a western term, I think). I have also seen some Mylers with what looks like a sleeve or covering over the joint. What are some other terms that I can google to look at more versions of a not single jointed snaffle? I don't want a Waterford, and I would generally like the bit to be show legal, although I know that different associations have different rules. TIA