Hot Heads Slowing Down

I have a horse named Ana that is really bad at standing still. She is a Saddlebred/Arabian cross and she can run for have an hour stop for a minute and be ready to run another half hour. She has no speed control. It's always fast. She would walk when you were trying to get on and she won't walk when she's on a longe line.
Now most trainers will tell you to make your horse work until he's dead tired. That didn't work out too well for Ana because she can run that long and she'll just get more endurance the more we do it. What my sister (Aleythia) and I did instead was one rein stops. For three weeks all we did was one reign stops. No pulling on both reins at the same time. By the end of those three weeks she stood really nicely but she was looking around and wasn't listening. So that's something we'll have to deal with. If she was listening she wouldn't be quite so hyper. So it took us three weeks to get her to stand still, and we still have walking, trotting, and cantering to do. So at the most it will take nine more weeks to get her to go at the speed we want. I'm guessing it will take less time because she'll already get the concept of it.
With the walking off while someone's mounting everyone says to back your horse up. But, what is often the case with hot heads they go forward really well and don't back up really well. Huh, maybe there's a connection, but anywho. You could get her to back up nicely but it felt like she wasn't trying or taking me seriously. So instead when she walked off we would hop down, take the end of the rein and swing it in a circle aggressively towards her hindquarters and make her disengage her hindquarters around in circles until we thought she got the point. That she could do really well.  Don't be afraid to actually hit them on the butt and it will help if your horse knows how to disengage his hindquarters beforehand.

Hope this helps someone out there,
Lydia Jonson