Ady...If your referring to the small lake / pond in Rochelle, IL right off 51/39, I've often thought about stopping there for a few rides while on our way up to WI. Not very big, but no wind obstructions at all surrounding the lake.
It's on the Launches page. Our Lou Pignotti RIP from Bloomington pioneered that lake. He said it's a speed sailing ditch with WNW wind. Bring your GPS and Freestyle board.