Here in Nebraska we get a lot of wind. 20-30 mph consistently blowing is normal. Some gust 40-60 mph. On these days (which most seem to be) we seem to have a real problem with draft. I was wondering if anyone had any experience with wind caps that box stores like Home Depot sale. (broken link removed to http://www.homedepot.com/h_d1/N-5yc1v/R-202555087/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053). Any helps appreciated.