RedactedNarrative: Vessel 1 was towing a male and female on a tube.  Female bumped her head on boyfriends head while being towed.  Boyfriend called 911 because female was showing signs of a concussion.  Female was treated and later released from hospital. Both male and female were uncooperative and refused to provide any further information.  During the first interview, they did not have the information for the boat owner or boat operator.  Subsequent requests for information were unsuccessful - subjects did not answer phones or return voice mails.