I ride with one hand. I used to do two but when something would happen I automatically dropped the right one and then would have trouble with my balance trying to get it back and pull the horses head left. Now I keep my right free and if I need two hands on the rein I bring it up. Doesn't make sense to me but I'm more comfortable and in control. I finding though that I don't even need it as much now and do well with just my left which frees me to hold the back of my saddle or the horn if I need it.