PWC Operator advised that while towing subject on a tube, the individual fell off the tube and was injured. Operator advised that the person tubing had her arms wrapped around the handle trying to hold on tighter and when she fell off her hands were not free enough to allow her come free.  Injured person had a possible broken forearm and dislocated shoulder. Violation noted was that the PWC Operator was not displaying an orange flag while towing.
Winfield                      