Ok, gentlemen, I've taken on board all of your opinions, and I've reviewed the various flashlight techniques at
http://www.surefire.com/articles-handheld_techniques, and I've come to the conclusion that a flashlight mounted directly onto my gun is the best option for me (thanks to Tex for the Streamlight suggestion). It is now on my Christmas wish list and I suspect my sister will get it for me, because I told her this significantly reduces her chances of being accidentally shot in the middle of the night. I have also found a number of sources for an under barrel picatinny rail mount, at about $65.