Hey Clearview
I have attached this comical you tube link that gives a fairly reasonable explanation as to why the moon appears upside down in the southern hemisphere from a flat earth perspective. Albeit the guy looks a bit crazy and uses the F word a couple of times, his explanation does make a bit of sense.
https://www.youtube.com/watch?v=KDUXlhv77dA
Also here is another video explaining a possible theory as to how the tides work from a flat earth perspective