Lorain, Ohio, which was the site of the 1993 US Windsurfing Nationals, is
right off I80.
Also, Wolf Lake, Indiana, right along the Indiana/Illinois
border, is right off of I80 and is specifically a windsurfing spot in an
"interesting" industrial area that might be an experience for you if it's
blowing SW when you go by (Call Windward Sports in Chicago, 773-472-6868,
for Wolf Lake and other south Lake Michigan sailing info).
I can't vouch for the Ohio locals, but I've heard they're all right - stop
by Frickin' Chicken for wings when you're in town, but don't forget to buy a
round of beers for the house to avoid any bad stares. The Wolf Lake
windsurfers are quite friendly and helpful, but watch out for the local area
residents - mostly former steel mill workers, they'll chew you up and spit
Hope this helps. ;-)