How many of you use a simple piece of plywood for an outer cover? I was trying to figure out how to keep things simple without harming the bees . I have several telescoping covers and they seem to hold the moisture in and the others that are just a simple flat cover with 2 end pieces seem to have nothing trapped inside.
I am trying to eliminate wooden inner covers as well, I have started to use a polyethylene material cover, just something to keep the bees from gluing the top cover down. I have a large roll of the material and it was free , so trying it is cheap for me : )
I have seen some commercial operations using just a piece of plywood sitting on top of a hive and the hives were just fine throughout the year. I'm sure in the winter months I would have to insulate the top etc .. But I just wanted to get some of the ideas you all have on what works for you.