Its kinda difficult. When I get home, I will post a video tutorial here unless anyone beats me to it, because I am at school, and youtube is blocked.
Anyway, you have to swing the yoyo off the non throwhand pointer backwards and pinch then let go of the slack and let the slack swing around. A very difficult motion to master, but you have to do it at the exact same time, or else it won’t work. Make sure you do it all in on motion. After you do two revolutions, then swing back into a double or nothing, and pinch then let the slack swing over. Rinse, lather, repeat