Yep, went twice in the late 80s.
The players that I remember working with was Wes Johnson (big left handed pitcher) and another big guy, pitcher out of Florida, real laid back. I want to say his name was Norman??? Sadly I don't remember if that was first or last name. I know he was in the rotation in the late 80s. John Cohen was there but i was never around him. Except one night, (we stayed at Evans as the Athletic dorm was being renovated) I walked into the common area of Evans. My eyes immediately fixed upon the hottest chick I had ever seen in my life (at that time) sitting there. After I came to my senses, I could feel her boyfriend staring at me like we wanted to break me in two.....it was John Cohen.
Anyway, McMahon ran the camp the years I was there but Polk was always lurking around. It was an honor to meet both men. But one day (don't recall my teams name) but I was pitching. Polk strolls out of the dugout and stands behind the catcher to watch me pitch. My first pitch, I beam the batter in the helmet. But after getting the jitters out, I settled down and did ok with Polk watching. However, no scholarship offer. Those camps are an awesome memory though. Getting to meet coaches and players, play at DNF, use the athletic facilities, getting to meet other high school players and coaches. Blister on top of blister from so much batting practice. Just a good, good time and well worth the $100 that I had to pay my dad back.
Also, one thing I learned that summer of my youth. If you put ice in a dishwasher hot glass, the glass will shatter in your hands.