I don't do anything to get arrested, at all so that isn't a concern. However the ankle pouch is a good idea regardless.
You don't have to "do anything" to be stopped and searched. You just have to match the description of someone that has...
Case in point, I was almost arrested in Nashville as a murder suspect. White guy, wearing a black jacket and blue jeans, brown hair. Pretty vague, huh? My saving grace was no tatoo's on my arms.