Originally Posted by tpcollins
I realize fly line weight is supposed to be based on the first 30', ........... a constant heavier line throughout the entire mid section and only tapers at each end?
Jackster got your answer for you. What you said about the "first 30 feet" is something I find really fuzzy in line construction. In a DT line, as you said " a constant heavier line throughout the entire mid section" is correct. However you have very much the same effect with the heads of a WF line. You know what the first 30' weighs, but that is almost never the whole head. Once the whole head is up in the air, what do you have? Who knows. I wish they would add the info to line lables on the box. Head length and weight. Someone said it would be going to a new system, but it's the system used in spey lines.
I'm sure I was of absolutely no help here.