Dog sleeps on a small CCF pad. I tie my pack cover top around him like a cape, and tuck it under him to block breezes. He's also under the tarp, and leashed to something at all times while I'm asleep.
It took a couple tries for him to realize the pack cover kept him warm.
Not sure if this will work, but am trying to attach my favorite dog-in-a-hammock picture. sorry, can't remember owner's name to ask permission to post!