I had my first trip to Dale Hollow in mid April fished out of Obey river area, I loved the lake and was impressed with the clear water. I would think if you have decent electronics Id look for deep structure and drop jigs down to them, or if your set up for it troll jigs or crankbaits. I know I catch my fair share of summer slabs in Ohio spider rigging deeper water, but the bite is lite similar to winter trout.