There's some pay and play fishing place in Plainfield. You could go to Shabbona, or LaSalle Lake. I usually fish rivers myself, if I were you I'd take Crazy up on his offer. Buy some circle hooks and worms for catch and release purposes unless you're going for meat.
went fish'n down south at heidicke lake. Didn't catch anything bigger than 7 inches It was my first time there, so i prolly don't know all the good spots, but they offer rental boats out there too. Busse is good, skokie lagoon is alright pass 6. Hope this helps