I have fished Arkansas in the fall. I went out with a buddy to fish the White river but the generation schedules were not good for wading so we went to the Norfork tailwater and had a very good trip with several browns over 20" and lots of rainbows. He caught one very large Brook trout at 19". You may be able to fish the kids trophy section at the dam. There are some monster browns in that section. I would tie lots of olive beadhead woolybuggers and # 16 silver beadhead pheasant tails. I look forward to another trip out there maybe next year. Have fun!