You can fish wet flys from the boat. Or use a water bobber and wet fly also. I agree on the white streamers. We fished Beaver Dam Swamp reservoir in January and the fish were in the shallow creek water. There were a lot of limbs in it from the beaver so letting any bait drop more then a foot or 2 was a problem. The fly rod was the best tool for the job. I tie a simple streamer on a size 8 3x long shank hook. Silver braided tinsel for the body and either white calf tail or white fox tail for the wing. This can be a killer in low water as does your zonker.