The stop works, but when I try to do the “go” by pulling my throw hand downward, the string gets all caught up and everything locks up. My son can do the trick every time, and we’ve tried to go over it even in slow motion, but neither of us can figure out what I’m doing wrong.
Finally figured it out. On the restart (“go”), when I was rotating my throw hand down underneath to get ready to pull the string downward, I was rotating the entire yo-yo, not just my hand, causing the string to get crossed or something in the gap. I didn’t realize that the yo-yo should remain in exactly the same position and orientation as it did when stopped. Only the hand should move. Works!