The Cortland Intermediate Slow Competition line allows you to fish just below the surface. It has a sink rate of 1 ips (one inch per second) or about 2.54 cm per second.
This is a great asset fo washing line technic and many other efficient methods of fishing when the fishes are below the surface.
The Inter Slow fly line can be considered to fish between 20 and 50 centimetres below the surface, the time spent waiting, retrieving and the type of technique or lure will also influence this depth. Cortland competition lines are designed for long distance casting.
They are WF profile lines with a 15 meters head, 1.50 meters back taper and 16.50 meters running line. The core of the line is made of braided nylon which limits deformations and extends the life of the line.
The stealthy presentation thanks to the 15 meters long head;
Micro loops at both ends
Olive green colour
How to choose your line ?
The Cortland competition fly line are double numbered and don't take this as a fancy reference to DT or WF... They are lines with a WF profile.
So the double numbering 6/7 or 8/7 will depend on the recovering and power of your rod:
Rod in #6 fast action choose the 6/7 model
Rod #7 medium fast or progressive action choose the 6/7 model
Fast action #7 rod choose the 7/8 model (Cortland rods in #7)
#8 medium fast or progressive action rod choose the 7/8 line. version)