RedactedNarrative: Based on occupants statements, two individuals were duck hunting on the Clinch river in a small cove on east bank of the river when they decided to leave their current location.  The operator put the vessel into reverse to back out of the cove at which time the prop became fouled in aquatic vegetation causing the rearward moving vessel to have its stern pointed upstream into the strong dam generated current which caused the boat to beging to take on water over the stern.  The individuals stated that in less than 10 seconds the vessel was completely swamped and subsequently capsized and sank to the bottom.  Both individuals went into the water aprroxiimately 40 yards from the shore and were able to swim to the near bank and call for help.