I'm all ears.That was Murray's Commander.
There are a couple adjustments you can make to get the rear to stop kicking as bad and fly straight.
Check this out lol: http://m.youtube.com/watch?v=K4-jrVbr4AM
So, as stated above, I guess all vehicles with inexperienced riders are prone to dipping. I don't know wth this guy was thinking... Either gas it more or less lol. He was going the perfect speed to set himself up for failure.