[crofter]

Give a thought to where pollen supplies are going to be in relation to the cluster when late winter broodup must start anew. Frames with solid honey can leave the bees pollen starved if that is where they find themselves when it is still to cold to travel down into the cold depths of the hive.

A search on Google for Brood and a half bee colonies will get you lots of info from Britain where it is a more common arrangement. There seems to be quite a lack of agreement on who should get on top.