I spent Saturday night 5/24-5/25 at Green Valley state park and fished with the guys next to my brother's campsite all night. I caught a bullhead with a nightcrawler, but they caught a mess of channel cats using bluegills - cut and whole. Between their poles and jugs, they caught around 20 - 25 cats from six pounds and smaller. The DNR is planning to restock the lake and has relaxed fishing regulations. Details can be found here: http://www.iowadnr.com/news/08apr/creston.html Good Luck!