Right, when they're sleeping, you can set traps and tranq 'em, or if you wake them up while sleeping with an attack, from what I've read, you get bonus stuff. Spotting a sleeping boss, later on, can be a bit difficult. Anyway, I'm going to go eat some food, but then I'll be playing again, so if you think you might be able to head on, I should be there in a little over half an hour.