Occupants of boat fishing near shore using trolling motor.  Storm struck the area of the vessel with high winds (to 45 mph) and 4' waves.  Operator attempted to move to deeper water utilizing the trolling motor.  The trolling motor failed to overcome force of wind and waves causing the vessel to swamp, resting on a rock ledge.  Outboard motor became immobilized in the mud and rocks and would not start.  Occupants exited the boat and swam to shore.
Bruneau                       