Coordination is the key for safe acrobatics. This video shows how dangerous acrobatics is when extreme caution is not taken. Although not a fatal outcome, this is a major injury.
Although it may not seem like dangerous, however, with enough velocity, a person could go over the water slide edge and face serious waterslides injuries.
The pilot of this plane purportedly and intentionally executed a dangerous plane rocking move, although you may wonder if he just had a little too much coffee in the morning.
