You will sign all the necessary paperwork, he will hand you a map, and you will follow him for 45 minutes up into the hills beyond the Napa Valley.  When you arrive he will suit you up in your waders and boots, and explain the basics of fly fishing.  After a few lessons of casting and reeling, the real fun begins!  Wading out into the river you begin the process of catch and release.  Plan on a minimum of two to three hours in the water.  Snacks and water available as you fish.   When you are finished you can sit down to enjoy your sandwich lunch soaking up the beauty of Napa County Wilderness.  Generally you can plan on returning to the inn no later than 1 p.m. which still leaves time for wine tasting in the afternoon.  (Disclaimer: As with all fishing excursions, expect to have fun but catching of fish is not guaranteed).   $525/couple, or $325 for one person.  (50% deposit required, and there is a 72-hour cancel policy)