Bitting a difficult to fit horse. Advice please!
We have a mare that has gone back into training recently after 2 years off. She was in the process of becoming a hunter jumper when she switched owners and was forgotten about. The mare has a low palate and doesn't like single jointed bits. The vet examined her and found she had an old calcified bruise where someone was too rough (yanking on the reins). We tried a French link which she did fine in and we tried a rubber bit. She loves the rubber bit I have but its too thick for her comfort (that low palate!) She has no idea how to ride in a halter so I need to find a rubber bit with a thin diameter or a French link with a thin diameter. Does anyone know if they make them? Or have alternate ideas? Were slowly teaching her what a hackamore is so we can ride her bitless but I'd like to have at least one bit that could be used on her.