In summer conditions its important to remember that subtly can be very important. When a river is gin clear and had lots of pressure the profile and presentation of your fly can make a big difference.
On Saturday afternoon I fished the Cowlitz River. With lots of jet boats running up and down fishing eggs, shrimp, plugs, spinners, and a variety of different techniques I decided to go with a small wet fly. I knew the fish had seen lots of big presentations and must have been feeling the pressure.