I've seen a few feeding frenzies in October but no doubt mid summer is prime time. There are still some great reasons to fish and float in the fall. For me the biggest attraction is the lack of other boaters. My last two trips to jet boat central on the Meramec were great. 8-10 miles of river, no jet boats, no partiers, nobody. On the most recent trip the bass had moved out of much of the faster areas but the water was warm enough we had some great top water action. Yes we had to stop several times on the way back up to the ramp to clean leave from the intake but this was a small price to pay. This is turning into a month busy with non fishing obligations, if I had my way I would do an overnighter each weekend covering all the sections of the rivers that I'm forced to avoid all summer