I think that longtime locals, feel ownership of closeby public spaces. We our outsiders, are not welcome, and are doing "something" to "their turf". I can understand close minded attitudes, but attacking us is out of order. Many detectorists steer clear from public areas, because of fear of abuse. Myself, knowing our days are numbered because, we are a tiny minority, and the next order of banned park activity signs will include, a little guy swinging a stick, with a disc on the end of it, and a big red slash straight through him. Maybe no time soon, but I do feel jaded.