He stated, "He was operating the boat (which belongs to his sister) and estimated his speed was "half throttle", around 25 miles per hour.  He was towing skier1 and Skier 2.  Initially he towed in a straight line, then in a slalom pattern so biscuit weaved behind the vessel.  While in the slalom the biscuit struck the wake and "endo-ed"

Skier 2, "This was not the first time she has tubed behind a motorboat and she said the ride was normal, although she characterized it was "going really, really fast, going crazy."  Skier 2 said whe the biscuit flipped, Skier 1 ran into her head as they flew off the skit tube.