Basically, it’s a sort of whip variation. He starts with an underwhip, and uses his other hand to redirect the slack in another direction. He keeps doing that, until he whips it into the gap. You can even do it from jade whip. There’s a very basic version in this video at 1:48, and you can watch the second whip in the beginning of the video to see what it should look like.
I do my own variation of it. You’ll see when my vid comes out. I did it HORRIBLY though. What you do is go into a trapeze, open up the loop on the trapeze with your throw hand index, underpass to the back string, grap the string on your throw hand index with your thumb and hold it tight against your hand, let go of the front string on your non throw hand index, then whip the slack and move the yoyo around however you want.
yea the brent is fun! i really like this guy, i like the tricks he does where he throws slack around and messes around with the yoyo like it is 5a or something, its pretty sweet