Step 6: Throwing hook
Make sure the end that is bent back won't snag your string and prevent release. You see I have mine tucked under the bottom corner of the hook and not off to the side. The string can slide freely up the hook and not get caught on the end of the wire.
You could actually bend it with the end being at the top of the hook instead of looped back over. It's a little safer with the end looped. If you accidentally release it, and this hook hits you, it won't cause any damage like a pointed hook would.
I could have bent the hook flatter. I had a little sideways bend there but I was trying to do this entirely without tools. A pair pliers, or even a tap with a hammer would straighten that out.
Once again, it's not important for function. It works fine like this.
The flat part that goes on the boom lays across the top side of the chopstick and is attached with tape (you could use a rubber band also - but tape isn't as heavy and you want the smallest weight possible on this end of the boom).