Understand, the very best time to throw a punch is when your opponent is swinging at you & immediately after - a counterpuncher will systematically wait, with incredible patience, for the opponent to throw at them before punching back - their ultimate goal is to "counter" their opponent with whatever punch they throw - catching your opponent's jab with your dominant hand will always create a window of opportunity (albeit small, given the speed & power of the jab) for them to be hit.