RedactedNarrative: On 4-5-21, V1, a 1997 Bombardier personal watercraft, was traveling southbound on Lake Havasu in Thompson Bay when it struck V2.  V2, a 2016 Hallet was not underpower but undwerway, facing east on Lake Havasu also in Thompson Bay.  The Operator of V1 told the Operator of V2 that he was having some sort of mechanical issue, and did not have control of the PWC.  Brief information was exchanged by both Operators, who then left the scene.  The Operator of V2 has been unable to get in contact with OPERATOR 1 with the telephone number provided, so he decided to report the incident to Law Enforcement.  