bob.oz, you're always going to wonder now about that park because where there is lots of junk in the ground there were lots of people there. And yes, there is a good chance there are gold rings there. Seems that gold and junk go hand in hand. Take Tom's advice about finding a place that is more likely to have gold with less junk.
However, there is nothing wrong with going to you're park and picking out a likely area to hunt. Start thinning out the junk a little at a time and concentrate on the better signals.....when you have the spare time to spend. Eventually your persistence may pay off and that park might start to give up some jewelry - if you want to put in the time and effort.
Just remember that if you disc out foil you will miss small size gold rings including most ladies and girls sized rings.
Good luck and Happy Hunting!
However, there is nothing wrong with going to you're park and picking out a likely area to hunt. Start thinning out the junk a little at a time and concentrate on the better signals.....when you have the spare time to spend. Eventually your persistence may pay off and that park might start to give up some jewelry - if you want to put in the time and effort.
Just remember that if you disc out foil you will miss small size gold rings including most ladies and girls sized rings.
Good luck and Happy Hunting!