Large Mouth not that large on River!!!

[Lilmoosecountry]

Many lakes large mouth are the dominant species. But on the Missouri River my biggest is 3lbs. Maybe there are some horses out there in the Channels & steams. But there not that big on the main river. Why are'nt large mouth more dominant in size. I catch Shad all over that river. That's why my # 1 bait is the Sassy Shad. How come the big BASS aren't getting big & fat. In my area there only a dozen people. So i know it's not fishing Pressure. They're is no pollution issues. We have some very big wing dams that are almost as big as a large ponds. In these area's there's not alot of current. This is where i catch most of them. There is a Wing Dam every couple of 100 ft. Some Wing dams are Rocky some have alot of dead tree's.