RedactedNarrative: V1 & V2 were traveling west on the lake when V1 was traveling a little faster & moved ahead of V2.  V1 made a starboard turn in front of V2, hit a wave and then landed on V2, knocking the operator off V2 and in the water.  A passer by assisted the operator of V2 into their boat & towed the PWC back to the dock.  Operator of V2 did not file an Operator's report & has since moved  out of state, leaving no forwarding address or phone.