Wait a minute. Didn't work in Woodstock in 1969. Probably won't work now.
What weather system are you seeing? No rain today in Western PA and temps back down into the teens at night by mid-week here. 7-Springs still has 30+ inches of base and won't suffer too bad from the rain and warm weather.
Blue Knob shouldn't be and example of "good coverage" for anyone. I love BK, but they are cheap and don't make a as much snow as they could. They tend to rely on natural snow much more than places like 7-Springs.
Stop being a pessimist