Thank you for your comments. Rest assured that if I see what I thought I saw again I WILL report to CASA, and No, I'm not moving, because Queenscliffe is the only safe harbour in this part of the Bay.
For the record, and based on various discussions on Pprune over the years, I've decided that the entire region between Torquay and Point Lonsdale is off limits when I'm flying because of what I will term "aerial pollution".
This consists of errant skydivers (apparently jumping through cloud) and various trikes which seem to operate without rhyme or reason. I skirt the CTAF on the occasional scenic. I'm simply asking if others believe that Tiger Moth World is part of this phenomenon. Do they have radios by the way?
P.S. Yes, it is a tragedy, and it was less than six feet of water. More I will not say.