The way I see it is .... if you need to slug rack me, safety break against me, (try) to shark me or use any other tactics other than your skill as a pool player to win, then you should try practicing more.
After all that is likely what the difference between you and me really is.... I use my time to get better.... you waste your time trying to find ways to beat me.
Sorry but a defensive break isn't a shark tactic. If playing against a stronger player not smashing the rack can decrease the chance your opponent is going to run out after a dry break.