Thanks for the advice. I did find that spec page for the Winegard, but perhaps I do not know how to interpret the data. I assumed the beamwidth data applied to various frequencies on the main lobe of the signal. For a decent guess of how to adjust the aim, I figured I needed the location of the side lobe of the beam pattern (degrees off main lobe). That spec page does not seem to list that info... at least, I don't think it does.
https://encrypted-tbn2.gstatic.com/i...O7H6Ui31PvTWjw