Re: At VTCodger, re: aiming.
Again, you are referring to satellite services that point at a fixed location. The Starlink antenna tracks satellites that are constantly moving quickly across the sky, horizons to up. There are typically multiple visible in multiple parts of the sky at a time, more as more launches happen (the goal). They won't need any special setup as you're suggesting. The mobile setup is using the same (or pretty close) hardware (no doubt there will be revisions). If it can't see north, it will choose up. South, no, the license (I believe) requires mostly north (ish) in our hemisphere (If I recall correctly, could be wrong).
There isn't a gross general direction. The antenna just needs to see "up".
Take a look at satellitemap dot space (no www), it shows their movement and positions. Note that the antennas are already self-pointing and can orient themselves as is.