I use a 5wt Sylk line on an old 9.5ft Bruce and Walker Merlin 2-4wt for short-range work on still-water and river. Firstly, the Sylk feels lighter than other 5's in use. This may be an illusion. Secondly, it produces more windknots for me than any line I have ever used. It shoots well and floats well, so maybe experience will teach me how to avoid the knots!