The last few batches of BB's I've done with out wrapping, I spray these (something I'm not much a fan of) with AJ and whatever every 15 mins or so after the "pulling back" stage and think they have a firmer (by this I mean better) texture this way. If wrapping BB's I think 1 hr wrapped is plenty of foil time. Its easy to get them over done and this happens faster in the foil than out, and you can't tell its happening.
Not saying this is the
way to do them, just what I've been playing with and seems to be working well for me.