Apparatus mountable to a boat tower or pylon used to tow a skier, water boarder, tuber or rafter including an elongated arm pivotally mounted to the boat tower or pylon, a tow rope post fixed to the arm and including a tether guide ring through which a tow rope may be threaded and a mounting member to which one end of the tow rope may be secured. The apparatus will also include a sensor that detects the change in position of the tow rope post from a predetermined fixed position caused by the lateral movement of the person being towed. The elongated arm may have speaker and/or light mounts to fix speakers and/or lights to the elongated arm in a position to track the movements of the towed person and may further include a securing means to fix the elongated arm in a given position.