Ok so to star off I Know that a bit is not the answer to a horse you are having a problem with so let me explain. I bought Sunny over a year ago. She was perfect when I rode her despite the fact is was a real windy day. I asked when I bought her what type of bit was used on her and I was told a wonder bit. After research I knew I wasn't usung that. I used what I had on hand which was a gentle egg butt snaffle. I had problems right off. She wouldn't fles. Wouldn't turn put her head up in the air continually. Wouldn't stay off the horses butt in front of her even though she was kicked while trail riding and on and on. Anyway one of the ladies I ride with asked what bit I was using. She said I should try something else. She rode Sunny (much better rider than I) and had some of the same problems but not quite as much. She brought me a shanked bit, she has a large variety since she show equitation, pleasure and trail. She said it was a step up from what I was using that it worked by putting pressure on the poll then the mouth and to release pressure as soon as my horse responded to the command.
I used it for the first time today and couldn't believe how much a difference it made. She backed off the horse in front of me she kept her head in a lower more relaxed position she was even neck reining and working off my leg better. No raising her head up and trying to get away from the bit.
I'm going to ride her a few more times in this bit and if she continues to work this way I will buy one for her. Sorry this is so long but I'm really excited. This is the first time I wasn't fighting her most of the time I was riding.