Get a good locator and look for the fish around the drop offs and humps. They can be tight to the bottom so I suggest a high quality finder with lots of power, a Lowrance would be my choice. Once you find them drop a 3''-4'' white or chartruse tube, twister tail, bucktail or maribou jig down to them. Tip the jig with some bait. Sucker meat, minnow or sculpin, whatever is natural and legal in your area. The warmer the water, the deeper you will find them.