RedactedNarrative: Vessel 1 was heading west near Dunham / Frenchman's Island when vessel was struck by vessel 2.  Vessel 2 struck vessel 1 on the port side near the stern and continued along the hull until the hull of vessel 2 rode over the bow of vessel 1.  After checking for damage vessel 2 fled the scene.  Vessel 2 is described as a newer 17 foot Lund or Lowe gray in color with a black stripe along the hull.  The vessel was occupied by two older males and was last seen heading east towards the north shore of the lake.