Tyabb Airshow 2020 display

Lightweight home built craft with a circular wing. In 4th or 5th iteration?
Known as "Useless Flying Object"
Very stable, one person plane, took off in strong cross wind, no problems.
Entry & exit from a door underneath the aircraft.
Entertaining to see the pilot open floor door, exit the craft, close door, then attach a tow rope and pull it back to the parking location
When originally built, total cost was under $1,000
Registered as an experimental aircraft