THE PILOT DELAYED IN ABORTING THE LANDING AND FAILED OBTAIN OR MAINTAIN SUFFICIENT AIRSPEED TO KEEP THE AIRCRAFT FROM MUSHING AFTER LIFT-OFF. FACTORS RELATED TO THE ACCIDENT WERE: OBSTRUCTIONS NEAR THE APPROACH END OF THE RUNWAY, FAILURE OF THE PILOT TO ATTAIN THE PROPER TOUCHDOWN POINT, AND THE TREE AND FENCE NEAR THE DEPARTURE END OF THE RUNWAY.