There's only one sure-fire way to deal with trolls:
ban anyone that responds to them.
If I was a mod I would ban for a minimum of a month
anyone that responded to an obvious troll, permaban
anyone that made a thread about an obvious troll.
And I would never, EVER ban trolls.
Trolls would become a teaching aid instead of a nuisance, helping to cull the weak and ignorant from the herd until the forum would be populated only the wisest of the wise, the elite, and we would then build an utopian society and prance surrounded by unicorns and teddy bears under double rainbows for all eternity amen.
ps: I would have been banned for this post.