I think that another rule for safe co-sleeping is that you shouldn't do it in a waterbed, because of the gap between the mattress and the box it sits in. And I've heard that it's marginally safer to put the baby between mom and wall, because mothers instinctively won't roll on the baby (when sober etc.), but that fathers might. Personally, DH is very aware of Sproutkin (perhaps because we've always slept with her) and we both wake up when the baby stirs, so I feel comfortable hemming her into the bed with pillows and leaving them sleeping while I shower in the morning. That is, before this crawling thing started... My DH, though a deep sleeper, is also very aware of Laura, and it's never been a problem. I often leave them in bed together, usually late at night when I want to finish stuff while they sleep. I think he got used to being aware of something else besides me because the cat would sleep with us, and DH would pet the cat in his sleep without really waking up. None of us tend to be rollers or tossers in our sleep though, so that probably helps. DH usually doesn't stir when Laura does, unless I'm slow to get her latched on.
