I have a 14 year old TB(off the track for many years). I haven't been riding her much since I had a fall off her, but she has been being worked regularly. When I ride her I just worked on W/T and I never have much problem with stopping and slowing down. The one time I did have a problem was when I ended up falling off her(there were a lot of factors that made her more excited). Now I've been having a friend of mine come ride her, she used to event and hasn't ridden since she helped me train Bella last year and before that hadn't ridden in 3 years. She came up on sunday(I have videos here ) and then again today. She's been working on jumping with her and she insists that she needs a harsher bit because she pulls on her hands and doesn't want to stop, she wants me to use a corkscrew(hell no!) My barn owner/instructor agrees that she needs a different bit also, right now I ride her in a loose ring oval mouth(I think that's what it's called, it's a double jointed snaffle). I think she does really well with it, and I think she likes it also. I let me trainer use her kimberwick low port curb with a chain a few rides and she kept ducking behind the bit and throwing her hear around. I was not happy with the results at all so now I'm very hesitant to change it again because on the flat she is pretty good with her normal bit. I'm feeling pressured into changing her bit even tho I really don't want to. Does anyone have any moral support or suggestions, or maybe even another mild bit that I can try that may give a bit more control but I definitely don't want to use anything like a twist or corkscrew, I hate those things! Also at the moment we don't show but in the future I may like to do a dressage show.
ETA:We used a running martingale today and she said it didn't make a difference, although to me it looked like she was being better.