THE PILOT HAD FLOWN TO THE ARPT 5 TIMES BEFORE AND WAS AWARE THAT ALL LANDINGS WERE TO THE NORTH AND TAKEOFFS TO THE SOUTH ON THE SINGLE RWY 01-19. THIS WAS FOR NOISE ABATEMENT AT THE NORTH END OF THE RWY AND BECAUSE OF THE RWY UPSLOPE TO THE NORTH. AT ABOUT 1150 AN ACFT BELIEVED TO BE THE ACCIDENT ACFT WAS SEEN BY THE DAUGHTER AND SON-IN-LAW OVER THEIR HOUSE SOUTH OF THE ARPT HEADING TOWARD THE ARPT AS IF TO LAND ON RWY 01. AT 1154 THE ACFT WAS SEEN NORTH OF THE ARPT FLYING LOW WHERE IT STRUCK A TREE, PULLED UP, STALLED AND ROLLED OVER ON ITS LEFT SIDE TO CRASH NOSE FIRST. THE FLAPS WERE FOUND RETRACTED IN THE WRECKAGE. THE OWNER'S MANUAL STATES THAT IN A GO AROUND CLIMB APPLY FULL POWER SMOOTHLY, REMOVE CARBURETOR HEAT AND REDUCE FLAPS PROMPTLY TO THE HALF POSITION. AT 75 MPH RETRACT FLAPS SLOWLY TO FULL UP. IF OBSTACLES ARE AHEAD THE WING FLAPS SHOULD BE LEFT AT HALF UNTIL OBSTACLES ARE CLEARED.