YoYoJam DarkMagic
Start with a Trapeze.
You are going to bring the string underneath the yo-yo and then just as the string hits your throwhand finger, let go and this should create a large loop. Using your non-throwhand stick your finger back into the loop. (Sometimes it helps to use a more responsive yo-yo or a less heavy yo-yo in my experience.)
  Repeat step 2 as many times as you want and return with any dismount.

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