That’s such a pretty river wherever you fish it. I’ve fished the lower stretches of the Vermilion, LaSalle county, for most my 67 yrs on this planet . It sounds like your stretch of river is fishing like the lower stretch fished before it was infested with all of the invasive carp species. Numbers downstream are much lower than they once were. I’ve talked with others who agree that there are areas with some big fish up by you, if you can find them. It sounds like you found them. I agree with all the above comments. I would go with Paul’s plan. The lower stretch fishes better with top waters when the water is on the low side. It looks like you may be able to find a good topwater bite. If not other larger baits should cut down on the number of smaller fish. I would stick with single hook soft plastics, like larger twisters and paddle tails. It’s amazing how many small fish will try to eat a large crankbait and manage to get stuck. Be sure to carry a bunch of softbaits with you, as the smaller fish are notorious for taking the tails off of them. I agree with the early and late in the day thing for the big boys too, that has produced my biggest fish from most bodies of water, unless I’m after carp.
Those are some nice photos and fish. Enjoy the action and the scenery. The bigger ones will come. They are bigger because they have learned to be more elusive, but they have to eat too. 🙂