On 10/23/13 at approximately 1900 hours.  Dusk was about to set in and Operator had just activaoperator his running lights.  Operator and his wife Occupant were traveling west in their boat (ID2498AS).  As they travelled west past Mack's Creek the boat was traveling on plane at approximately 20 MPH and approximately 50 from shore in the narrow channel.  The boat suddenly, and without warning, struck a submerged rock.  The boat came to a near abrupt stop, ejecting both Operator and Occupant through the front window of the open bow boat.  Operator and Occupant landed o the bow of the boat, they were not ejected into the water.  Operator and Occupant each sustained brusing and scrapes to their thighs.  The boat sustained damage to the hull on the underside of the bow along with trasom damage.  The engine was also damaged.  No other passengers were on board.  The injuries have not required more than first aid at this time but bone damage to the legs may be possible.
Boise