I don't think it's what you're throwing, rather when and where you're throwing them. You didn't mention if you're bank fishing, or doing so from a boat. I assume by your mention of water depth, it's the bank. The when, you have zero control over as you've stated. The where is where I think you should concentrate your efforts. If the fish aren't actively feeding, in which case you'd likely be catching, you need to change locations. If you can't reach deeper water, choose areas that are close to deeper water. As the water is dirty, you should skip the presentations like Neds, straight tail worms and shakey heads and concentrate on moving baits for a couple of reasons. The first is that the fish can find them easier and the second is the limited amount of time you have. My recommendation is for a big, shallow running crank like a FatBoy, Big O. or a 2.5 squarebill.