I would like to take a family hike up Osceola next weekend. We usually head north to the Whites in July and August and have managed to avoid black fly season. I know we've had a cool May in New England. Is it a late black fly season this year? This will be my younger daughter's first 4,000 footer, and I don't want her completely turned off by swarms of those little nasties. Any advice would be greatly appreciated!