i'd at first thought, the trick's just that, if you must, do it outside of your own social circles. on second thought however, i've come to the sad conclusion that that's no workable solution in the long run. perhaps it all boils down to this--either (1) abstain, resist, do-what-you-will, or (2) choose to live that life in the open and deal with the repercussions as they come.
the one big thing to bear in mind is, remember, the six degrees apply everywhere, and the most, where you especially don't want it to. you can never really hope to leave no traces; you're never really alone. *starts playing the x-files music*