Conservation via exclusion is the NPWS way. I have keys to many NPWS areas including wilderness areas. The sad fact of the matter is they don't have the resources or $$$ to manage the parks properly so they build a fence and close it off. The ferals then run wild, black berries, rabbits, wild dogs, cats foxes, horses you name it. But as far as they are conserned its all good because its "protected" it a crock of sh!t and you greenie types only have yourselves to blame.
At least Fatty O'Barrell is brown and starting to open a few of the parks up again, not that I think he is much chop either.
I have never driven the dunes on Stockton but always planned too. This now seems like a pipe dream.
Regards
Jas