I've noticed most pro players and high rank players always run slightly backwards when they're about to pop Hunter's Fury, can someone explain why they do this and what it does? Many thanks.

I've been searching and found this site [leonetang.com](https://leonetang.com) and all the knives look really cool, but I've never heard it before and I don't know if it is good quality. I'd appreciate if you could tell me sites where I can...