From the benchWith gin-clear water and bright summer sun, your presentation game matters more than fly selection today. Drop to a 5X or 6X tippet, keep your casts low and your approach from downstream, and target the shaded bank structure between 10 AM and 2 PM when terrestrials are most active. If you're floating Section B or C, hug the canyon walls — the big browns are stacked in the shadows waiting for an ant or hopper to land within inches of the bank. When the terrestrial bite slows in the heat of the afternoon, switch to a deep sowbug or worm rig through the main channel seams and let the current do the work.