AMA also defies the FAA on line of sight. There are several threads on RCGroups with logic twisting definitions that claim that line of sight doesn't mean actually "seeing". The worst is the one from Jason with a photo of that ridiculous contraption from the 60's with the guy in a reclining position looking up through some sort of telescope.

You can't expect anyone else to comply with line of sight when AMA doesn't either, despite AMA's fake spotter rule which is 100% ignored.