FFS Farcast Moss Green Classic All-purpose Fly Line FFS fly lines are designed to give you long casts and precise line control. FFS line coating shoots through the rod guides with less drag, assuring longer and more controlled casts. A double taper gives you heightened control at all distances. In addition, because both ends of the line are the same, you can simply turn the line around and double the useful life by fishing the other end. Some anglers also say that DT lines are better for mending in mid-distance casts. Pair the FFS line with FFS backing for best performance.