Join Date: Oct 2007
Location: Greenville area / SC
It sounds like a horse that missed a lot of training/retraining or had some pretty harsh riding. I would suggest starting her over again. Get her into a round pen and start your work there. If there are no physical problems then the gaping mouth, hollow back, bolting, etc come from avoidance and fear.
If you don't know the history of the horse I would keep the bit you have and begin training as though she was just started. It's actually going to take more time because you will have to overcome what sounds like the really poor training or very harsh treatment she came with.
Going to harsher bit is definitely not the right way to go.
I'm not arguing with you, I'm just explaining why I'm right.
Nothing sucks more than that moment during an argument when you realize you're wrong.
It's not always what you say but what they hear.