Leia loves going fast. It is really easy to make her go into a gallop, she will leap into in from a stand still if you ask her. She has no problem stopping when I tell her. I didn't even attempt a gallop until I knew her brakes were perfect. But a lot of times, she gets really full of herself and will throw a buck in. She really likes to do this in barrel racing when we make that final stretch. When she does this, I smack her really hard on the butt with the crop and make her spin really fast with her head flexed to the side. But, without fail, once we reach top speed, she bucks. Not a 'BLAST YOU! I'M going to THROW YOU!!' buck, not a 'Ouch! Something hurts!' buck, its a "YAHOOOOOO!!! WEEEE!! FUN!' buck. I've checked for soreness, and I don't gallop her when she's over worked or tired. I have to keep her head cranked up when I gallop her and even then, she throws in an 'Arab-style' kick-thing. Any Suggestions?