I may as well start doing it now so that YMMB Tower gets used to me calling " MINIMUM FUEL" at the inbound reporting point. Not a lot of margin for me two up on an aerobatic flight.
So, if I have to hold for an inbound IFR aircraft or do a goround or two etc and I suddenly call "MAYDAY, MAYDAY, MAYDAY FUEL" what do you think the Tower will be doing next! I've still got 30 mins left at that time but an "emergency fuel declaration is a distress message" per CASA's new laws - I don't feel I'm distressed but I'm not sure about the Tower.