Stop_and_Shoplift OP wrote

I pretty much did what is shown in this video except I used 6 sort of thick rubber bands. The video makes it look easier than it is (or maybe I'm just bad). What I usually do is I rotate the big part of the tag while wrapping the rubber bands around. You'll hear a clicking noise when it starts to come apart. I recommend trying it with something thick first like jeans or a sweatshirt. I stretched out a couple shirts before I got the hang of it.