V1 WAS TRAVELING SOUTH TOWARDS THE SIGN TRAIL AND CHANGED DIRECTION MAKING A LEFT TURN ONTO THE SIGN TRAIL. V1'S SPEED WAS EXCESSIVE FOR THE CONDITION OF THE TRAIL AND IT BEGAN TO BOUNCE FROM SIDE TO SIDE IN THE TRAIL. V1 OPERATOR LET OFF THE THROTTLE IN AN ATTEMPT TO REGAIN CONTROL WHICH CAUSED "OFF THROTTLE STEERAGE". V1 CONTINUED TO HAVE FORWARD MOMENTUM WHEN THE STARBOARD AFT OF V1 STRUCK A TREE CAUSING THE REAR OF THE VESSEL TO SWING SHARPLY TO THE PORT AND THE BOW OF V1 SMASHED INTO A GROUP OF CYPRESS TREES.