Has anyone managed to transition from a side sleeper to a back sleeper? I'm trying to but it ain't easy so any advice would be appreciated. My main reasons for trying are that I think back sleeping would improve my posture and I would more easily get away with using a foam sleeping pad instead of my inflatable pad combined with the stuffsack for my sleeping bag as pillow with stuff within. The latter advantage equals weight savings and a more durable sleep system. My wife thinks I'm crazy when I practice this on our bedroom floor next to our huge bed.