I've been fishing 35 to 40 ft water, with current and no structure and having pretty good luck with 20 to 30 lb blues.. Until last weekend.. The past 2 weeks I can't buy a bite. I tried dropoffs, structure. and even went after flatheads in 20 ft of water with all kinds of timber in the water.. Nothing all day long.. About 2 oclock 2day I was getting ready to call it a day and tried a different spot.. I catch my bait next to an island on the mississippi in 2 ft water.. I moved back around to the island and tried 16 ft water with not much structure if any and bam... 44 lb flathead.. There's no timber or holes or anything to attract a flathead in that area.. It's usually full of gars in that area.. So where do I find the blues at since they aren't in the deep water and the only thing in the shallow water is gar. Any help would be appreciated..