At the risk of being accused an expert, I would object to putting a flight plan for a local flight or circuits in Wentworth or anywhere else under 50 nm.
The last thread was closed because of personal slanging, (as was demonstrated by the new "redheads" matches exposed today on ABC TV), If in any quandry ask an ATPL space cadet like Oktas8, I'm only an average pilot with just as many take off's as landings over a lifespan of 63 years. Flying since 1965. But what would I have except experience?
ADSB as a SAR tool is reactive, not proactive unless it is mannned 24/7 by an ATCO.
Comments on that welcome.