RedactedNarrative: Vessel #2 was headed northbound at approximately 40 miles per hour having slowed from approximately 60.  Vessel #1 and another rental personal watercraft were operating erratically in the area of the eventual collision.  The operator of vessel #2 slowed even more as he observed the two personal watercraft.  Vessel #1 then headed toward the arizona shore as vessel #2 approached.  Vessel #1 then made a sharp abrupt turn to port and sped into the path of vessel #2.  The operator of vessel #2 attempted to avoid by throttling back and turning slightly to starboard.  There was heavy boat traffic in the area as this collision occurred during the Independence Day weekend, an extremely popular time for boating on Lake Havasu.  Operator1 was ejected and died of trauma.