I use the "migratory covers", although, we usually call them "covers" or "flat tops". They have advanteges here of being easier to remove, not allowing a place for SHB to hide and reproduce, not allowing a place for "Bull ants" to nest and, of cource, being cheap. In the winter they will sometimes get a little condensation, but, that's easily fixed by proping up one side about 1/8 inch or so with a nearby twig. As for winds, the bees (if you have a stong colony) will propolise it down in about a day or two. The hives go through hurricanes just fine without a lid flying off. Granted, those were all some distance away and winds were only around 40 miles per hour.