yuuki slack help

hey i understand the first part of yuuki slack but when we go into a double or nothing and we slack…should we swing the yoyo twice or once?and everytime i do it there is no loop to catch(the one after we slack from double or nothing)

Twice. The first revolution makes the double or nothing get released. So after it, you are in a mount released trapeze mount. The second rev makes the strings go around your wrist. Then when u reverse it, it comes off the wrist, then goes into a d’o’n.