The cold clear water of the Shenandoah Valley's Dry River enveloped my waders from the knees down as I eyed the riffle upstream of my position. There was no hatch or surface activity visible, but on this brook trout stream the lie I was after looked to be a good bet. The little 3 weight glass rod flexed well into the cork as I put 20 feet of double-taper line in the air, then dropped the little #16 Elk-Hair Caddis within inches of my target.