Nobody asked but …
My alter ego, Verbal Vol, is in the midst of penning a series on logic fallacy in his bi-weekly columns, Finding the Challenges. But today I ran across an excellent article by Max Borders, Effectively Irrational: 30 common fallacies used against libertarians. These will give you excellent examples of how logic fallacies might be used to try to topple principles often held specifically by voluntaryists.
Kilgore