I see a solution.
Organise a charity fund raising fly in......say for RFDS.
Advertise it heavily in all the mags and aviation traders etc, as well as forums such as pprune.
Suggest that all weekend people should go flying for local scenics and taxi via that taxiway and do their very exhaustive run ups at the holding point. But be prepared for long delays.
I am sure it would not take long for the "word to get around" on the purpose of them.
Then hand out free copies of printed NOTAMS with the phone number to call (at all hours) asking for advice on when it is suitable and just for a friendly chat.
