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Have any of you been somewhere and have been asked to leave? What were the circumstances and who asked you to leave?
Heysenn, it's bound to happen to any of us, who've been at this long enough. If you're skittish, just be forewarned, you've got to have a thick-skin at times for this. Unless you're going to most mundane easy beaches (where much less likely for people to care less), or unless you're on private property. Because when it comes to places like parks, campgrounds, fairgrounds, school yards, etc.... let's face it: a guy swinging a metal detector is an anomoly that draws the stares of curious folks. You know:
"oooh, look at the man with the geiger-counter thingy. I wonder if he's finding anything good?" It's hard NOT to draw lookie-lous. And no matter how you slice it, there's admitted connoations that you can't escape. Ie. that you "might leave a hole" or that you "might be finding something valuable" and so forth.
I wish it wasn't that way, and I wish all archaeologists and gardeners loved us with open arms. I wish there were neon signs at park entrances saying "metal detecting and digging welcome here". But alas, this hobby just doesn't have that "built in" factor
I've lost track of the # of times I got booted from places. I just give lip service and move on. If it's some place with no specific rule, I just wait a few months, and go back (at a more discreet time, of course). Reason is, it's entirely possible you just ran into a gardener having a bad day, or a cop who was merely responding to a call (and they're duty-bound to make a decision, even though they themselves might not have cared less). I mean, of course, you pick a better time, and avoid whomever busy-body it was in the future. Heck, one time I even had a lady on the beach complain that my detector was bothering her dog! (I think she thought it was emitting some sort of sound frequency or something that only dogs hear?).
Anyhow, start with very innocuous places, like the beach, yards at your friend's houses, etc... till you've built up some target-retrieving skills (pinpointing to keep the incision small, etc...).