Rob, I keep forgetting to respond to your comments I hear now and then about the top entrance and bottom entrance. I have both top and bottom entrances. I personally think it has good merits, as you do. I like the fact that if I am working the colonies that they can still enter their home through the regular doorway, which is the bottom.
I can see problems with only top entrances, and yes, they are mainly what you speak about. When you use top entrances only, definitely all those bees that want to come home will be trying to get in through the top, just where they are used to, you will be encountering more bees to deal with, and yes, some pretty frustrated and disoriented bees because their entranceway looks pretty different with a human, a smoker, the roof ripped off, bottom and top entrances for this gal, ain't never gonna change that method of entrances for sure!!. Beautiful and wonderful day, love our life with live. Cindi