Originally Posted by MacabreMikolaj
No discipline should make a horse hard mouthed. If the horse is developing a hard mouth from being reined in constantly, it's because he's not been trained to properly pull a cart and listen to cues. Driving should be absolutely no different then a soft English contact. Tons of horses both ride and drive without ever having mouth issues, so it's all in the training.
one hundred per cent right,most horses I ever drove would turn at the slightest pressure but I find it easier to train a driving horse to ride,then the other way around but as mm just posted theres no reason at all why a rider shouldent be a driver as well