I am from Peoria and hunted there for many years, Jubilee State Historic Site is definitely the best find I ever had, found over 300 in one tiny spot, stay low, near the Kickapoo, bring a stick, they're hiding under the itch weed, look for giant trees, there were people everywhere but they never saw them, I did. Don't bring attention to yourself! They will start to swarm. Another piece of advice, get out of Peoria, go camping at a campground that has accessible forest with a water source/streams etc. a bit outside Peoria. Any large creek where people can go fishing is a good place to look.