Casting is all about problem solving, and wading on greasy substrate up to your elbows in heavy current, with a 30 mph crosswind, presents ample problems. “Which run do you want to fish first?” asked Rich, my old friend and host. My answer was quick and unwavering. “The Fly Water.” The lie, like an aptly named “Elk Creek” or  “Fish Lake”, lives up to its basic moniker. Here, the river flows at that ideal pace preferred by resting steelhead. At the head of the run, several submerged boulders provide further respite from the current and add complexity to the swung fly presentation. Controlling fly speed and course through these variable currents requires attention to detail; subtle mends throughout the swing…