If your a bottom end user like me, and have to set it up manually, here are a couple of tips.
First, Get and or modify an antenna mount that you can level acurately. That reduces the search to one axis instead of two.
Second, compasses are easily effected by electical currents and material containing iron. Move around and make several readings and get the best estimate of where to point the dish to begin with.
Use some means to listen to the tone from the receiver at the dish. I made an FM transmitter, but a baby monitor or a commercial transmitter work well. You can then move the antenna around the initial pointing angle and listen for the best signal tone.
Lastly, give up and use the cable. LOL
Hope that helps a little.