Dick the only reason to close a business at the moment would be because it is so difficult to find qualified staff to meet the demand which is increasing at a rate I haven't seen for many years, despite the doom and gloom you like to push in the media.
Good thing I don't have to email strangers for business advice or I probably wouldn't be in this position where years of graft and investment are paying off very nicely.
AS for "mayday fuel" I can't think of a single time in 13,000 hours that I have come anywhere close to being in the situation where CASA say it should be used so it really is a non issue.