Ed I know it's not politically correct to fish braid without a flourocarbon leader tied to the braid but I have always fished braid without a leader with no problems. Granted our waters here always have a green algae bloom and we rarely experience the clear water conditions that you do. The closest we have in Alabama to the clear water that you have on Lake Powell is Lewis Smith Lake near Cullman,Al
And in direct overhead sunlight visibility is down to 30'. Tough fishing even with ultra light gear and line.
Wish I could advise about knot tying with Nanofil but have never felt the need to use a leader. The 10# Nanofil that I use is extremely small.......so small that I even have trouble tying a Palomar or Improved Clinch with my shaking, diabetic fingers

TRR

Edit If you read the specs on Nanofil, the line is designed specifically for spinning. It is slick but totally noiseless..................and no "line memory" like mono and fluorocarbon.