VESSEL 1 WAS HEADED DOWNRIVER APPROXIMATELY 1/8 MILE  NORTH OF COX FERRY LAKE. OPERATOR ACCELERATED AT TOO HIGH RATE CAUSING TILLER HANDLE TO COME OUT OF HER HAND FROM TORCH OF MOTOR. MOTOR TORCHED RIGHT CAUSING BOAT TO VEER LEFT THROWING PASSENGERS OUT OF THE BOAT.BOAT CIRCLED AND PROP STRUCK one IN THE BACK.