When you need a fast-sinking stealth presentation, 3M Scientific Anglers' Streamer Express Clear Tip fly lines ($59.95) fill the bill. The lines feature a clear, 30-foot, slow-sink tip and an intermediate-sink running section. Available in 200-, 250-, 300-, 350- and 400-grain weights for 5- to 12-weight rods, the lines are ideal for reaching fish holding up to six feet below the surface and feature a tip sink rate of 1.25 to two inches per second. The taper provides a straighter line to the fish for more realistic fly presentation, and the slick running section produces longer casts and fewer tangles. 3M Scientific Anglers, St. Paul, MN; (800) 430-5000; www.scientificanglers.com.