One technique that I have found that is absolutely killer for catching channel is jigging log jams. Find a big log or even better a bunch of logs together typically washed together during high water and tie your boat directly into the jam. While deeper water is more desirable I have caught fish in less than a foot. Hook a chunk of cut bait on a drop shot rig or a slip sinker rig and drop your bait in any hole that you can find between logs and flotsam. Make sure you can get a fish back out of the hole you are fishing. Just let the bait settle on the bottom. I prefer to hold the rod but you can set it in a rod holder. If you haven't got a bite in a few minutes move to the next gap you can see. This technique works extremely quickly and is stellar during daylight hours. Give it a whirl I promise you'll have a blast.