User blog comment:Roranoa zoro/Defeating Logia users without using Haki/@comment-1595565-20130706144937/@comment-1595565-20130706232439

You're making the same mistake about this that people who only watch the anime make about haki. The circles are merely meant to serve as an indicator that he is using some kind of intangible force. They're like radio waves. You can't see them, but they're there. He's not using wind, the circles are merely meant to serve as a way of artistically materializing the force of gravity. You're taking them too literally.