RedactedNarrative: The operator of vessel 1 was pulling occupant #3 on a tube. Occupant #3 was not wearing a lifejacket. The weather got worse as the wind picked up and a steady rain started. Occupant #3 fell of the tube. Operator of vessel #1 began to turn the vessel to go pick up occupant #3. In doing so operator #1 turned the boat too sharply and got the tube line wrapped into the prop and stalling the engine.  Occupant #2 jumped into the water also without a lifejacket to help occupant #3 as the boat was drifting away. Occupant #3 was able to swim to shore.  Occupant #2 began to have difficulty swimming and was pulled from the water by the USCG. Both occupant #2 and #3 were taken to St. Vincent's Hospital.  Occupant #2 refused treatment and was released, occupant #3 was held overnight for observation. Operator #1 stayed on the vessel until the USCG arrived and pulled alongside of the disabled boat.