I'd love to try it at some point, if I can figure out how to do it.
And it may be moot, because I don't think it's the doors. I tried sleeping with first one, then the other door in the open position, like the wiki said...and I was jumped by a zombie each time. This literally makes no sense. Everything inside is very well-lit, and there are no gaps for anything to wander in...and yet they keep wandering in. It can't be my bed, since if I so much as block off the cave entrance with dirt, it doesn't happen. At this point, I'm just putting the door between the cave and the house back up, until I can figure out what the hell is going on.