She's currently ridden in a three ring gag and ridden in the snaffle ring for schooling and the second ring for jumping and hacking.
She is a welsh cob, around 15hh and really stocky and with a really thick neck and can really put her head down and take control especially whilst out hacking. Despite this, she does have a soft mouth and is really sensitive to the bit in the school which makes me feel terrible when I have to take a firm hold and sometimes a tug when out hacking.
She is just an extremely excitable, fizzy pony and don't think a stronger bit will particualry make her less strong but don't know if her current bit is the most suited to her!
I heard thicker bits are kinder to the mouth and hers is quite thin, but do different thicknesses suit different horses?
Any help/advice would be soo greatly appreciated!!