im at Marree now, you could do it in broad daylight, and still never get caught... cant see very far over the horizon from the few roads around here.
even the Lake Eyre Yacht club has green tape issues, cant launch a boat from the shores apparently.. cant sail on its waters, but if you launch in a river feeding the lake, and sail into it, they cant do anything about it, and being a national park, the legal definition of a national park is " an area of land, to be preserved for recreation." its just that the national parks seam to think it means they own it, and treat it as if it is their personal land and not to be trespassed.