1) Learn to hit dou effectively and in one swift motion 2) Aim to strike dou with both hands on impact for ippon 3) Practice hitting dou with the same initial movements for men strike (keep left hand in center) 4) Dou strike against an opponent's men strike is useful in a losing match when the opponent's confidence is high 5) Practice footwork so that you can immediately change your attack from men to dou strike in the middle of your stride 6) Nuki dou and kaeshi dou are the same movements
This video was randomly recommended to me and I always understood that you need to focus on surprising the opponent and getting them to lose focus but I was always thinking about what movement I should make to do that and forgetting to examine the opponent. This video very well puts everything into perspective.