Well, in my experience you get the best results when you start correcting a problem before they even start doing it. Once you identify a problem then figure a way to work them that you can stop the behavior BEFORE it happens rather then training by punishing behavior that has already occured.
When I'm riding one in the arena, they always want to go towards the gate either head straight for it or just kind of at a diagonal. I start leg pressure to keep them away from the gate right before they start angleing that way. They most generally will start at about the same sport everytime. It's kind of funny really:).
Becky
You're right. I just went out to let them out. (I fed an hour ago) I led her out instead of just opening the gate. -just with a rope around her neck and over her nose to be easier, but it works. I'll leave the line out there.