This tutorial by The Spinsterz shows how to Duck In the hoop while it is twirling around. To do this trip, you need to be able to pass the hoop around your body. You bend over and go in the hoop while it is coming behind you after spinning it on your thumb. He shows a practice move to get used to pushing the hoop with your hand to give momentum. The trick is showed clockwise and counter-clockwise. He also shows how you can use this trick to switch the direction of your current. To finish the video, he shows a quick variation of this move.