WIND SHEAR ON SHORT FINAL TO A GRASS STRIP CAUSES PLT TO REJECT THE LNDG AT LOW AIRSPEED. REDUCED CLIMB PERFORMANCE RESULTS IN MOMENTARY CONTACT WITH TREES OFF THE END OF THE RWY.

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WHILE ON A STABILIZED SHORT FINAL APCH TO RWY 16 AT 1RL A CHANGE IN WIND DIRECTION FROM R XWIND TO TAILWIND OF APPROX 20 KTS LED TO A DESTABILIZED CONFIGN WITH EXCESS GND SPD AND INADEQUATE AIRSPD FOR A NORMAL LNDG. FLOATING IN GND EFFECT WAS ENCOUNTERED FOR 2-3 SECONDS. THE ACFT PORPOISED TWICE AT WHICH POINT A GAR WAS ELECTED AND FULL THROTTLE APPLIED IMMEDIATELY. THIS WAS APPROX 1/2 THE RWY REMAINING DISTANCE AT DECISION FOR GAR. INADEQUATE CLB PERFORMANCE WAS ENCOUNTERED WITH AN IAS OF 55 KIAS. RWY END OBSTRUCTIONS OF APPROX 16 FT IN HT WERE CLRED AT APPROX 50 FT ALT AND ADDITIONAL OBSTRUCTING TREES WERE ENCOUNTERED OF APPROX 80 FT HT WERE NEXT ENCOUNTERED WITHIN 1-2 SECONDS. AN INCIPIENT STALL WAS NOTED AND THE NOSE PUSHED FORWARD TO GAIN AIRSPD. THE ACFT CONTACTED THE TOPS OF THESE TREES WITH ITS FIXED LNDG GEAR AND LEADING EDGES OF THE WINGS AND L HORIZ STABILIZER. A BRIEF PERIOD OF L YAWING FLT ENSUED WITH AN ALT LOSS OF AROUND 30 FT. THE ACFT TRANSITED THE BEACH AREA AND WAS AT APPROX 100 FT ALT WHEN REACHING THE WATER'S EDGE. NORMAL CTL FORCES AND CTL CHARACTERISTICS WERE NOTED AT THIS TIME AND THE ACFT WAS CLBED TO 500 FT. NO ENG STOPPAGE OR PWR LOSS WAS ENCOUNTERED. THE ACFT WAS BROUGHT AROUND AND A NORMAL SOFT FIELD LNDG WAS ACCOMPLISHED. HUMAN FACTORS INVOLVED: INADEQUATE ASSESSMENT OF POSSIBLE CHANGING SEA-BASED WINDS AND THE DECREMENT TO ACFT PERFORMANCE WITH SHEARING TAILWINDS. LCL FACTORS SUCH AS RWY; TURF CONDITION; AND OBSTRUCTIONS WERE NOT FELT TO BE CAUSATIVE IN THIS INCIDENT.