Just my two cents for fishing the tailwaters around here is to become very proficient using midges. Whether it be dries, larva, or pupae. Learning how to properly fish the correct midge imitation can mean the difference between a skunking and a fantastic day.
I spent last year working on the midge techniques, and it paid off. This year I am planning on working on my dry technique just like you. I think the first thing to concentrate on is mending and getting a perfect drift. IMO that is what makes the difference when fishing dries.