I've noticed they try to be tight lipped about what is working up there. Trying not to encourage out of towners and all. Lol.
Bring your binoculars, look for grouped up boats and head that way. See what they're doing, find a patter and then duplicate it. Sounds like they are trying to sell folks on crankbaits and planer boards, same as last year. I'm headed up at the end of September, but will be running double minnow rigs. I will be watching the sonar but last year, 16 feet deep was about right.
Good luck, post your findings when you go (what did and did not work)!