I think trolling also requires a fair amount of callousness towards the harm/pain etc you're inflicting through your stunt. I prefer, when possible, to engage in something like civil disobedience, where you can show your commitment to your cause by being willing to accept suffering for yourself (jail, beatings, etc) rather than demonstrating the strength of your opinion through your willingness to hurt others.

This requires that you only use such techniques to criticize people who can hurt you, though. What about people who can't hurt you, but who can hurt someone else — for instance, their own children? How would you apply this principle to, say, anti-vaccinationists? Provoke them by illicitly vaccinating their children without their consent, thus risking jail for battery? Doesn't sound like a very good idea to me.