cuda-mark and foiler, let's just cut-to-the-chase : For purposes of this discussion is REALLY DOESN'T MATTER who "owns" it, right ? Because we can ALL agree that the public is not dis-allowed from being there. Right ? Otherwise how can anybody ever step out of their car from the passenger side of a vehicle ? The minute you do that, you're (gasp) stepping onto the curb-strip ! So let's all just agree on this one thing, that the public can walk there, step there, or whatever. Right ?
Ok, then it merely boils down to a dispute of legitimate use. Eg.: "standing there" versus "metal detecting" there. And I notice foilers usage of words to characterize md'ing:
" Using a metal detector and punching holes in the ground ....."
Ok, ask yourself : "What is the inescapable implication of the above characterization ? : Geeks with shovels poised to make a mess and leave holes ! Of course! Then sure, if you characterize md'ing in THAT LIGHT, well sure, then by all means don't do it ! But then SO TOO will you be disallowed from parks, schools, beaches, and anywhere else, if you make md'ing to be the automatic equivalent of "damage and mayhem".
If you leave no trace of your presence (aren't making a mess or leaving holes), then presto: you are just as innocuous as the guy getting out of the passenger side of his car, if you ask me. Is that to say that every single homeowner will agree with those semantics ? Of course not. MD'ing has connotations after all. Fine then: Pick lower traffic times when said-lookie-lou isn't there to gripe. Presto, problem solved