I am about to build a third long langstroth hive. I want to use a thin sheet of plywood on top (less weight and awkwardness). That means when I take off the top cover, I don't want to expose all 4 feet of frames, so I am thinking of using four, soft inner covers, end to end across the expanse, which I can remove one section at a time. Questions...
1. Should I use pieces of canvas or the thin, flexible sheets of foil insulation? I see both being used.
2. Will the soft inner cover, laying on top of the frames, mess up bee space movement on top of the frames and air flow inside the hive?