RedactedNarrative: Boat pulling tube with one other passenger on tube.  Boat was turning left and tube swung to the right, outside of wake and was bouncing on the chop on the water.  Victim felt a "crack" and lost feeling to limbs>  Other tube passenger signaled for boat to stop.  Victim was taken to shore where she was flown to Denver hospital and diagnosed with L-1 spinal fracture.