I got that info sent to me from a St. Charles local.....might be worth a try.You could try this.
My wife's family lives nearby but I never seem to get a chance to try it. I think they have boats to rent at each of the fishable lakes.
I usually fish the Mineral Fork river when I'm there but last weekend the smallmouth were still not active yet. Another one I fish is Big River. Both require floating them for decent fishing, or wading for Mineral Fork.
I'm headed to Missouri here this next weekend and I'll have a day to play, any good fishing within' 2 hours of St. Louis anyone can recommend? PM's welcome if you don't want to say here.