George, There is always..
Civil Aviation Order 40.2.1
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14 Flight by night under night V.F.R. procedures
14.1 A particular grade of command instrument rating authorises the holder of the rating to fly an aircraft of the category concerned within Australia as pilot in command, or co-pilot, using the navigation aids endorsed in the holder’s personal log book in the following circumstances:
(a) Private and aerial work flights under night V.F.R. procedures provided the pilot meets the aeronautical and recent experience requirements applicable to a night V.F.R. endorsement.
(b) Charter flights under night V.F.R. procedures, provided the following aeronautical and recent experience requirements are satisfied:
(i) Aeronautical Experience. The pilot’s aeronautical experience shall include 10 hours cross-country flight time using night V.F.R. procedures including a minimum of 2 navigation exercises (of at least 300 nautical miles or 3 hours duration), as either pilot in command or in command under supervision. Each exercise shall exceed a distance of 100 nautical miles from the point of departure and shall provide at least 1 landing at an aerodrome other than that of departure, located in an area remote from extensive ground lighting.
Assuming that you only logged the usual hour or so of IF on those long nights, (the rest of the flight time therefore not IF) you may still qualify. Not too sure if you get around that bit about a landing remote of extensive ground lighting though.
MIHC
Determination of visibility for V.F.R. flights
(1) ** Flight visibility shall be determined by the pilot in command from the cockpit of the aircraft while in flight.
but if you can't see and avoid the areas of reduced vis, how can you possibly be flying legally?
Didn't you answer your own question? It's up to the PIC if he/she wants to go and have a look at the actual conditions, and then make a decision. Morno's on the money.