RedactedNarrative: Operator of vessel #1 was towing the victim on a tube around the lake.  Victim fell off of the tube, but neglected to let go of the rope.  Her arm was sprained/injured from being pulled through the water.  Victim was transported to a hospital for treatment.  The cause of the injury was due to the victim not letting go of the rope when she fell off the tube.  No other injuries were reported or damages were reported.