After almost 30 years, I'm getting back into beekeeping. I had 200 hives at my peak (In my young 20's) Now at 50 I want hives again.New pests are a huge problem. I've been reading non-stop for 3 weeks. In a small operation (10 hives)would you go with 100% screened bottom boards? I'm in SW Ontario, how much winter cover is too much? I have a ton of questions. NY, Mi beekepers info would be appreciated as well as Ontario.