Today i was doing some schooling and....!?

I have a spoiled brat of a mare and she does the same thing. She is great if there aren't any other horses around OR if she doesn't have to work to hard. She likes running around the pasture trotting loping but try to get her to run barrels and all heck breaks loose especially if other horses are just standing there. What you have to do is when he bucks push your feet out in front of you and push your seat into the saddle and lean back, also turn his head around and make him go in a circle ( it throws him off balance and he can't buck) and pull his head up just reach down on the reigns and pull his head up so he can't buck. AFTER he bucks give him a firm smack so he knows he can't do it again and spin him around in circles. I always make my mare back up and spin in a tight circle going both directions. Before a horse bucks they normally give warning signs you need to learn to read his. If you feel him trying to get more reign and bring his head down low don't let him because he's probably about to buck.