Back when we were doing C4 night shoots Rumbler suggested going with no light and point shooting. His logic was that pointing your index finger at something is very natural, and in low light situations close up you can hit the target just by pointing and using the middle finger for trigger.

I tried it, it worked ok, and I surmised that with a little practice is seemed reasonable to hip minute of person at reasonable distances without a light.

However, unlike him, I don't live alone, and I need the light to verify the target. So I didn't work with it much further.