Here is the scenerio, I have my opinions but wish to hear other ideas. I'm fishing on a big river, The Columbia river. Equal to the Mississippi or the Missouri etc. The river is dammed at McNary which makes it form a huge reservior behind the dam( Lake Wallula). The main river channel is 20-120 feet deep. There are some bays and pools of shallow to very shallow water which make up much of the shore line. The water in these bays is without much current. The Temps range from 68-80 deg in the 10 foot or less depths. The water in the main channel is about 60deg or so and that water is moving pretty well through the lake. Where to fish? This lake/ river has given up a few cats to 30 pounds, and thousands every year that are 12-20" long. My biggest is 17.5 last weekend. I've been fishing the same place over and over but I want to learn more of the lake and try some new places. My opinion is that I need to be in 70deg water after dark in the shallows near isolated islands or the main shoreline. My feeling is the cats are prowling these areas for food. What I want to get help on with this scenerio is where to fish during the day, or maybe a better idea for the evenings. Thanks for suggestions, I know that the visual might not be easy from my description but It's the best I can do here!