Most of the TVs use have a built in one. The flat side of the Winegard antenna points to the direction, the wingmaster attachment works AND points to the station. If you know where you are and where the major stations will be, carry a compass with you to initially point to the station and scan the channels. Fine tune the direction with the built in signal meter
For a dipole antenna the broadside or long side should face the transmitting station. If you hold your arms straight out to your side (left & right) your face or the the back of your head should face the transmitting station.
For a directional antenna like the Wingman the facing side with the extra elements should face the transmitting station.