RedactedNarrative: Watercraft #1 was pulling tubers at between 25-30 MPH. The tube was designed for two people and there were three adults on it. The tube hit some waves and it threw the victim (according to witnesses) 10-20 feet. The tuber was knocked unconscious and was rescued by another boater. The operator had just purchased the tube and knew nothing about towing speed recommendation. The injured victim was transported to the hospital by ambulance. All involved were wearing life jackets.