RedactedNarrative: Operator stated he was pulling his three children on a "Big Bertha" tube behind V1.  He made a left hand turn, the tube hit some waves and caused all three occupants to be thrown off.  In the process, the victim made contact with another passenger on the tube.  The two uninjured tubers stated after the fall they observed the victim floating face down in the water and swam over to her and turned her over.  They said the victim was unconscious and that her limbs were trembling violently; she remained in this state for about 30 seconds before she regained consciousness.
   
  Once they got everyone back on board V1 they immediately headed back to shore and transported the victim to  the hospital.