The people referred to are the Flying Farmers Association (FFA)
and they have a web-site available to all.
members only can get details of all airstrips (about 200) .
membership is not expensive and to be eligeable you need to demonstrate an interest in aviation and some form of rural interest (and preferably a strip to reciprocate but that latter not necessary).
All trips strictly PPR as we all have, as well said, severe restrictions and noise abatement procedures.
We are not too keen on 'strip hunters' who just turn up for fun. --often make a low fly-by under excuse of 'checking suitability etc' and generally misbehave.
if you fly sensibly and demonstrate a need to visit a strip then usually fine, Go ahead and apply for membership details on website (via Google)