I've really enjoyed JB Caldwell's camp at Embry Riddle in Daytona Florida. Usually ran in July, I've gone twice. It's not a get picked up camp but it's a great camp to learn 3-man or hone your skills. Uses high school varsity boys. Runs in July.
There is another camp in the Cincinnati Ohio / Northern Kentucky area at Northern Kentucky Univ. that runs in June. Uses high school boys Varsity. If you are a SW Ohio official trying to move up, this is a good camp as several Cincinnati area assignors hit this camp.
E-mail me on these, I have contact info.
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