it depends on the horse. Some needs more gallop than others. My grand prix mare has a difficult canter and is very slow. I always had speed warm horses, so you have to adjust to your horse. If I put a too high canter, I can leave the course with some knockdowns, but if I keep her in the right canter while taking turns tightly to be in time, my mare is more confortable and the course goes very well. There is no one good way to work the gallop, otherwise our sport would be too easy ! You have to know how to listen to your horse and what is good for him.