Hang your cameras in places you DON'T plan on hunting.....and take them down before the season starts. Never have to worry about spooking them with the flash OR (more likely) spooking them with your continued scent in their bedroom.

Too many photos of them hanging around for me to give it too much thought, though. It's a vacuous "absolute" I don't agree with (that it scares all of them - the flash).