Yes, you MUST wind it! I don't have a ball winder so I place it (carefully so as not to tangle) around the back of my computer chair and start to wind, it doesn't take but about 10 minutes. Oh, this is what I do, when I take the hank and put my hands inside of it and give it a snap (binging my hands quickly side to side within the hank) and then untie it and I've not had any of those nightmare tangle stories that I've heard of after doing that; which is advice I got from a lady that has been knitting for a looooong time & she was right...worked like a charm .
FYI, the hank fits amlost exactly around my computer chair so there's not much chance of it lying limp to tangle.
I'm sure others will come in with their experiences and tips.
The best thing to do is get someone to hold it taut between their hands while you wind....if you can get a volunteer