RedactedNarrative: V1 WAS STOPPED WHILE WAITING TO GO UNDER BRIDGE.  V2 WAS FOLLOWING BEHIND AND GOING TO FAST.  OPERATOR OF V2 TRIED TO USE REVERSE BUT GOING TO FAST SO COLLIDED WITH V1.  OPERATOR OF V2 WAS CITED WITH RECKLESS OPERATION OF A PWC.  PFD WERE WORN, ALCOHOL WAS NOT A FACTOR, AND NO INJURIES.