Eastern WI diving recommendations

[jasondbaker]

I'm attending a wedding in Green Bay at the end of June. I'd like to take a couple extra days and explore dive sites along Lake Michigan. I've done some stuff in Door County (Gills Rock) and a couple sites in Milwaukee (Willie/Dredge/Milwaukee). Is there anything I should check out inbetween? I would need to find charters or buddies that could dive during the weekdays (6/28-6/30). Any recommendations appreciated.