unknown, off-freq VFRs in E airspace
Grabbing at straws Bloggs.
If they are unknown, how do you quantify them except with extreme alarmist statements like that claiming that it is a known factor in risk management that you can't or won't quantify.
If VFR are mandated to have transponders in E,- It is LAW- LAW- LAW- isn't it?
How many of these criminals have been brought to justice Bloggs?
Perhaps the prosecutions will quantify your statements or at least make them relevant or comparable with known data about penetrations into say, controlled airspace.
VFR have a place in Australian airspace Bloggs despite your monastic attempts to rid this vermin from any sky you just happen to be flying in.
Get used to it. You don't own it!
I'm not going away because you don't like me. Get used to that too.