Re: 6th OOC
Bound pcs can make attempts each round to free themselves. If they are unsuccessful, they could move somewhere. No, of course, they can't. They're chained. Nope, not much else they can do, I'd wager--accept notice that they have none of their possessions. Trying to kick these things away would be futile but who wouldn't attempt it (unless one we're busy trying to wriggle free)?
Since the chains are weak, alternatively, pcs could smash them against the poles themselves for two rounds (or two nearby pcs bashing the same chain, I would presume).