So we should impose stealth mode now because somebody might some day write some killer software that might let people know where thermals are and this might turn out to be a bad thing? I've "written specs" for lots of stuff too, like thermal detectors. No reality yet.

I think we need to get back to a simple principle: Let's see if something is really a problem before we start passing rules against it.

Surely, you guys who want to impose stealth mode can come up with some real, serious, documented problem that real flarms today are causing, not just hypothetical problems of hypothetical future software?

By then we'll all have FAA mandated ADSB displays of all traffic, super cheap drone anti-collision technology showing us where the thermaling birds are, and so on.

John Cochrane