Creampuff has it absolutely right. The "national day of action" is an incredibly dumb idea because the General Public's idea of what constitutes GA is totally uninformed, its somewhere between delivering newspapers to Mildura, crayfish from King Island and silvertails playing with expensive toys.
Against that background even Pauline Hanson would be able to take AOPA apart with one hand tied behind her back.
At best, GA would come out of a "national day of action"it as a bunch of spoiled brats. If any incident occurred we would come out of it as a bunch of homicidal idiots who don't deserve the priviledge of using the airspace (and CASA is very strong on that word "Priviledge").
If we want to do something for GA in Australia the steps are very simple:
1) Hire a very good
PR firm and brief them well about what we want to achieve.
2) Do what they say to create a positive public perception of the industry.
3) After the public image of GA is seen as favourable in the minds of the general public, then "work" with the Politicians and Bureaucrats(god bless them, its a rotten job sometimes) to change things in a "Win/Win" manner.
Any other approach, to put it in pilotspeak, is about as successful as turning back to an airstrip after a low level EFATO.