Bumping this as my son just returned from the three day Duke summer prospect camp. A caveat - I didn't go with him so the impressions below are gathered from him.
He enjoyed the camp and compared it favorably to Stanford. He thought the talent levels were similarand the instruction was good. The studs at Duke compared very favorably to the top kids at Stanford camp. At the bottom end talent seemed a little thinner at Duke.
Big group - 150 kids, mostly drawn from the south. Heavy on 21s with a lot of 22s including kids with game EVs at or near 100. Instruction was pretty good but it felt to him like evaluation was the primary objective (as it perhaps should be). A little less interaction with players perhaps due to the time of year.
Mix of drills (lots on Saturday) and simulated games starting with a 1-1 count. Other coaches there included Yale and Columbia and HA D3s.
Takeaways were 1) good camp experience 2) Duke is heading toward Stanford in player quality.