Quote Originally Posted by Ross View Post
I have 2" and 3" holes in virtually all of my tops. I just lay a loose board over them when not in use. Rain leaking in has never been an issue. I'm not saying it doesn't leak in, but I haven't lost a hive (out of 50 now) in several years. Mine are on SBB, so the water doesn't stay around. I would look for other causes.
I follow almost exactly the same protocol with exactly the same results. I thought I came up with it on my own, but I guess some sensible options can hit independently on the imaginations of multiple persons.