I've only managed to get 5 of them so far. They appear to be scattered randomly, not several in the same area. Plenty of acorns on the ground.
Your doing better than me.... I got 2 so far this year. Both of them with my truck. I tried to dodge both of them, but it didn't happen. Our season opens this coming Sat., but it's awfully dry. Gonna be tough slipping thru the woods.