Size 16 caddis dry fly is often hard to beat in that area but you will also want some ants of assorted sizes and pt nympths as a start. Not sure if it happens this time of year but also take some large Caddis flies in case the moths are about. Do not let others tell you months are never eaten by trout because at least in Sept up in that area they do. I have hiked a few lakes in that area but normally is Sept so I can not say if there are other to take this time of year as well but at least this will give you a start.