VH-XXX - do you know if CASA will also mandate any kind of anti-collision strobe being fitted to them?
Those LEDs that cyclists use are very effective, highly visible and lightweight with low power draw.
I wonder if that could address two problems - make them much more visible to pilots of full sized aircraft, and a little easier to see by those on the ground who might not be aware they are being filmed.
This is the type of machine that appears to have been used in the bushfires.