FLOATING FLY LINE - If you’re using flies that float, you’ll want a floating line. The floating line will keep your fly on the surface and keep it closer to the surface as the fly absorbs water. These are usually brightly colored fly lines.
SINKING FLY LINE - If you are fishing with streamers and other bottom searching flies, sinking line is a great option. This line is a bit heavier and will quickly get you to the necessary depths. Be careful with this line, because you can get snagged on underwater obstacles. Sinking lines come in different sink rates. Sink rates are given in inches per minute. These lines are usually dark in color.
SINKING TIP FLY LINES - Sinking tip lines are a good hybrid when you want to be below the water but want to see your line and avoid snags. The sinking portion is about 15 feet. The sinking and floating sections are different colors with the tip being dark and the floating portion being a brighter color for visibility.
FLY LINE TAPERS - A weight forward taper is the most popular design today. It is easiest to cast. Double tapers are not as good for casting but offer the benefit of twice the life by using both ends. Level lines are super affordable because they have no taper and are easy to manufacture. They offer the lowest distance and casting accuracy of all the fly line designs.