I thought about it and I'll tell you about some secrets that I know. First your bait would be maggots. What you do is find the smallest hook possible (14 or 16) with a 6 foot piece of a 2 lb test tied to a very ultra light rod and fish the edges of the river for bait. You will catch all kinds of small minnows and unknown small fish. Do this for hours. Take the bait you got and fish it as normal bait with weight and hook or jigs. There are a lot of ways to catch fish in the river.
My favorite way is in a boat with the boat pointed upstream with trolling motor running on low to slow drift rate. Using a 6 inch rapala gold or copper lure casting into shore and ripping it towards the boat. The trick is you have to bend the eye of the lure slightly and/or some of the trouble hooks. What you want it to do is a big wheel or a big circle so from the surface of the water to the bottom. Hold on to your rod when they hit it and they will. It will almost be riped out of your hands.
Good luck