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I think the best way to tackle those members is to avoid replying on their threads because if they receive replies on such threads then they might make similar threads again and again to get some more replies and in long run some members might merit their threads.
If you find a troll posting something, remember the first rule; don't feed them.
Trolls are those who can basically bother you at any time, but when you ignore them and put them on your ignore list, then you will be much more comfortable surfing this forum without being bothered by them. Feeding trolls will not change their point of view, they are not users who easily change their mindset and whatever; it all ended in vain.