Confidence votes 31. To stop a horse bucking you need patients. And need to work the horse often, while your on your horse, when they start to buck try to pull their head up, without yanking on their mouth because sometimes when a horse is bucking they could be having discomfort with the saddle, their legs, or back.hile your on your horse, when they start to buck try to pull their head up, without yanking on their mouth because sometimes when a horse is bucking they could be having discomfort with the saddle, their legs, or back.