Trout are quite spooky which is normal. This year the trout are even more on edge. This is because the stream is flowing clearer than past years. I have been nymphing even deep pools w/o indicators. Dry/droppers are working very well. Hitting the trico hatch is a great way to get onto active trout. Searching with terrestrials is a good bet after the trico hatch..
4X is what I normally nymph with, but lighter tippets are sometimes needed. Most dry flies can be tied off 6X but the tipping point to 7X is around size 20. Dress appropriate-no bright clothes and you are set. These few tips and many more patterns, hatches and techniques can be found in my book, "Spring Creek Strategies" bought at any Orvis store or off my web site.
Looks like abundant sun and cool weather. Fall is here early. www.weather.com