I had my mare in a snaffle but she would pull, toss her head, and carry her head high... Someone at the barn had a mechanical hackamore and had me try it on her and what a diff!! She was very calm and easy to stop. She didn't fight it and didn't toss her head much.
I've been reading a crap load on different hackamores and i've limited my choices to the side pull or the Indian with the metal rings. Now I have no idea which one would work best? Also not sure if these ones i'm looking at are good?
The side pull...
It kind of looks like the side pull may put pressure on the poll of her head.. a small amount is ok but I don't think she'd react well if it's a good amount.