This really shows how effective you can generate speed by pulling with the Right Shoulder.
Did you say you are a lefty? That makes it easier to watch? But I guess you translated it into a right handed swing? I thought most of the pulling is by the left arm? But with only one arm - you don't have a choice. When I try to hit balls with a right arm only, it certainly feels like a hit - not much pulling there, I'm afraid..