subject 1 was operating a PWC (vessel #1) and following behind subject 2 on a PWC (vessel # 2).  subject 2 slowed her PWC to let other traffic go by and  subject 1 did not notice her slowing.  subject 1's PWC impacted subject 2's PWC. knocking her and a passenger off and rendering them unconscious.  A passing motorist assisted and got the two injured persons to shore where they were transported by Air Life to University Hospital in San Antonio for treatment. Report filed by game warden
Hancock                       