I deal with property owners regularly and their biggest concern about people fossicking is them entering their property unannounced or uninvited.
As the article states, the property owners need to checkout any fresh tracks as they could mean a threat to there livelihood or disturb their cattle.
Even if the property owner seems "scary" it is well worth putting the effort in to become acquainted, find out their concerns, once they are on your side it doesn't take much to please them.
Looking after their interests takes as little effort as letting them know if you think some cattle are in trouble, or if you see a fence down, others vehicle tracks, cattle in a paddock without water etc.
They will appreciate your simple effort and you may be seen as an asset rather than a nuisance.
On one property I travel through I noticed two cows in a small paddock without a water trough, I notified the property owners, they were very grateful, and stated that I had saved their lives with that simple observation.
The fact that I wasn't the one who shut the gate would not have mattered if those cattle had died, I would have been blamed as they knew I was there.
They knew of no on else that was supposed to be there. Some one had been there without telling them and did the wrong thing, notifying them was in MY best interest also. Thus it is important to tell them if you notice other wheel tracks that are not due to their activities.
It's about time these laws were enforced.