While fly fishing isn’t an especially gear-intensive activity, there are some necessary items that need replaced from time to time. One of those is a fly line. Unlike regular fishing line, fly line is heavy and is what the rod actually casts, carrying an angler’s fly-tipped leader to where he wants to fish. The number one choice to make when choosing fly line is whether the line floats or not. As its name implies, floating fly line floats on top of the water and is commonly used for fishing dry flies. For sink-tip line, the first 10 to 30 yards sinks, but the remainder floats. It is the most common fly line for fishing nymphs and streamers. Sinking fly line has no floating sections and is more common when fishing fast water, deep pools, and deep lakes.