Well... By tactics I've meant a system of convincing someone to make him correct. During giving Dawah, this system plays a vital role on the success. I'm briefing it: At first, the person is praised for his good virtues. Secondly, politely he is shown the correct thing. Finally, apologizing and seeking correction with humble request. Example: If you go to a local leader who is a muslim (by name), at first start conversation with praising him- Mashallaah, Allaah has made you a leader. You are perfect for this job. You are very skilled etc etc. Then start saying the greatness of Allaah and remind him about death. Later advise him very politely to be regular in Amaal and to avoid corruption. Finally apologize and request him for making Du'a. This strategy is very effective even with arrogant and ignorant people. Please forgive me for my silly arguments. Remember me in your Du'a. (This part is real. I'm not implementing above mentioned tactics on you.)