I have a conundrum...I have one hen and one roo. I want to hatch the eggs and would like to maximize the viable # of eggs I can hatch at any one time. Conventionally I'd be able to get about 7 eggs before the first ones I gathered start to loose viability. I remember reading something about pre incubating eggs for 6 hours or something like that, but I don't even know how to search for that again? But what can I do to get about a dozen or more viable from one hen?