I noticed that you recommend a top entrance on your hives. I am starting a build using the golden mean plans from backyardhive.com. I have already been convinced to build them much longer - 48 inches. The plans call for a 1/2 inch entrance at the bottom front of the hive.
My question is how would you put a top entrance on this hive? Would you just cut a 1/2 inch at the top of the front board? Here is a rough drawing of what I am talking about.
Top entrance vs bottom entrance.JPG
If so, would you narrow it at all or leave it the full length minus the side boards?
Would the roof of the hive just hang above it?