If they are running water through Truman Dam (I prefer 30,000 cf/s or better), fishing down below on the LOTO side can be really good in the dead channel. You can check Ameren's website for hourly updates. I recommend putting in at Drake Harbor in Warsaw and running up to the dead channel (opposite channel or the one running right up to the dam). One or two rod off the side moving slow or not at all. Minnows or jigs. If the water is running, fish will bite. Mostly crappie, but will definitely catch some catfish, white bass, maybe a gar or two, and the occasional walleye or paddle fish. Easy fishing and you should never get hung up. Fish will light up the fish finder or ask the next boat over for depth. I usually fish 10-12 feet down and all over the channel. Most people are friendly and will offer advice. Good luck with both your fishing and your knee surgery!