I used the Cloake board method last year with good success by grafting and adding the grafts to the top box. I've read that one can also do it by introducing a frame of eggs and letting the bees do their thing. If you've tried doing the latter, typically how many queen cells do the bees make? I introduce 15 when I graft and they seem to handle that fine. Just wondering how many I would get if I left it up to the bees.