Unfortunately guys, these are some of the people we attract to these areas when we have open forums.
Had the same problem with some up in Qld. Ruined it for most.
Remember, according to most state fossicking acts fossicking is a hobby and not to be a source of income.
Unfortunately there are some that go crazy at the mention of gold or other valuables and think they can do what they like.
If we are to retain the privilege of fossicking we should respect all property owners property and wishes as well as treating the fossicking areas with respect.
If you want to find more, do some research, exploration, do the legal thing and put in a mining lease application.
I did 17 years ago, (I'm not mining gold though). I also have my share of people who think they can just turn up on someone else's (My) lease and keep what they find. That also is an offence.
If I know them and they are courteous and I'm there, sure, I might have let them have a scratch, but now I am bound by oh&s, public liability and such so now it's a big no from me.
Property owners are bound by similar laws, so appreciate what you have, find out who is responsible and put a stop to it before we all miss out.
I also love to wash a pan of dirt for a few specks here and there, (but like most) I am careful to not upset the property owners.
Do the right thing guys.