Fire drills- I never thought of that- will have to give it a try. One thing I saw someone else do was a domme who demanded a color from the bottom at regular intervals. It was always green, but at least she knew where he was. I don't know that I'd like that though, it might ruin the mood.
Maybe we should just change it to help. It's not something I would say if I didn't mean it.

I have to say, in addition to being a little scary, it was amazingly hot. Amazingly.