I've killed lots of pheasants there! Oh, sorry, that's a different question :)
Seriously though, I have seen a number of posts some time ago on one of the "Indiana" forums on another site and I think if you do a search in here you will find some old posts.
I seem to recall redear being prevalent in those discussions but I could be mistaken.
There was a couple of guys talking about Willough Slough in the Indiana, Illinois, etc. group. You could join and then get access to that plus the ability to contact them.
Jay
I took dad out Saturday afternoon when the weather broke. Fished the north part of the lake past Deer Island. Caught 50 something from 4:45 - 8pm. Smaller this week... a few 8s, mostly 7s, several throw backs. Surface temp was 74. The spawn is definately done, and I suspect the big boys are recovering. Fishing 4 fow with sticks and grassy cover.