Draft dodging is logging out when you've been drafted or simply waiting and never accepting the draft, thus causing the timer to run out on the part of the person drafting. The rule is that you don't do it. Period. The reason for this is that it counts as a forfeit of a PvP match and the server kit was never written with a way to handle this gracefully. Thus doing so causes a huge spike in server load because the software effectively panics. If you can't win, you can always withdraw with the appropriate penalty applied.