Ahh the idea you can do as you want on public property: were do you folks get such an idea

?
I see the pay taxes again as an excuse to think you can do as you please. Reality check: you can not do as you please on public property in the US. Because YOU bought some piece of equipment give you no RIGHT to own what you find on public or private property. LOL at the gun rights reference to metal detecting.
This crap of do it until told other wise is a PART OF THE PROBLEM.
I can easily take the statements made here and else were on the net and make Exhibit A: Any number of such examples followed by a simple statement:
The are individual metal detectorist that will not ask for permission or a permit because they just want to do it. They see; "not asking for permission, and if not stopped": as PERMITION.
The individual metal detectorist want to seek out and find lost property: not belonging to them, and DIG it up and convert it to there own use, or financial gain.
In our parks the land scape can be damaged by such acts. They will say the repair it, yet who gave them permission to damage it in the first place.
Show a photo of fools that left holes not repaired.
Real basic response that could easily out do any good shown about metal detecting. It is easy to show damage done in this hobby.
This is the problem. How can you out do the bad, and show the good??
I have read the thread about don't post finds. Yet when I read about ignoring permission and go do it, until told to stop; I cringe more than any photo I have seen. It does more potential damage to the system than short of posting "I am digging up a grave for the pots": than any of the other stuff.
You folks may say it interferes with your game to ask; yet you do not even know if it is permitted. Or maybe you know it is not permitted and just chose to ignore it.
I don't know. A mute point at this time any way.
I do know it is one of the better tools to be used to get laws against metal detecting I have read on the internet. And it just keeps coming.
As for the GPS information, well on public lands yes such can be done.
GPS on private land only with permission to do so, and permission to pass that information along.
Oh and Yes I do under stand the need to do such in large areas. A coin spill can be spread a long distance with plowing and other surface disturbance. GPS can show such patterns. It can even be used were a house stood, and the patterns involved with that. For folks that do not know GPS can improve your finds.