It's not impossible to catch bass in clear water during the middle of the day, when light penetration is most intense, as long as you concentrate on shady cover or deeper water. Boat docks, piers, old duck blinds, overhanging brush, aquatic vegetation and large trees provide shade. On a typical lake or river, there is plenty of such cover, so don't waste time elsewhere. Use crankbaits that will dig the bottom and have an enticing wobble. Don't crowd the bank, but back off 50 feet or so. Use a reel with a fast retrieve so that the crankbait will get down quickly and stay there most of the way back to the boat.