I have also found that if you keep your "twat" like riding to the backroads, which i always do. Then usually the cops just keep on cruising by.
About 3 weeks ago I came around a nice corner in TN with my knee on deck and about 20-30 over the limit, as soon as i settle in and look on through, there is a TN highway patrol looking dead at me. Now while I probably deserved 1 for that, he didnt bother giving chase. I didn't run, but rolled to the bottom of the mtn. and sat for a few, when I headed back up, he was sitting there. I parked and proceeded to talk to everyone there, he never approached me. I chalked it up as my lucky day and went home.
I think having gear on, having a clear road, and being in control of your ride helps make their minds up sometimes.