Simply put, if you are facing someone down intent on fighting you, you turn it around. You get in their head, you delay it long enough while back up is coming. You tell them that back up is on the way. You tell them if they do not back down, then are going to get hurt. If they kick off, then so be it. Over here we can't afford to go loco, we have to wait until they strike. As doorman, we have little choice other than to look weak, or get in their head. It is evasive SD that we have to do. Rapid SD would involve putting them down, and you know what, we in essence cannot use traditional SD. That is why we delay. Understand that or not, you have to be in a position where you dealing with coked up morons, morons carrying bladed credit cards, shanks, knifes and the worst, morons wielding broken bottles. Hey, battering the crap out of someone is not the only form of SD. Using a palm strike etc. is not the only form of SD. Using your brain and being clever about is also a form of SD. You also use their narrow frame of reference on how you defend yourself, they expect you to fight. Using that against them is also SD. Anything to get yourself home safely. The ultimate SD, you don't get arrested. My take, take it or leave it.