you're right about the dust, you guys need a little rain in lower DE.
My first time there and I'll be back, those air cannons kicked ass, threw those punkins almost a mile. I enjoyed the human powered contraptions, some were right out of midevil times.
They (state police) turned people away Sat. it was filled to capacity, 25,000 attended. CNN was there. Here is more info and pictures:
There was a moped behind the fence where the contraptions were, running back and forth with some official on it, and I saw another one down near the air cannons when I was arriving. DE punkin chunkin rocks!