Fly lines are one of the biggest sources of confusion and debate in fly fishing.
Confusion is not just limited to beginners. Walk into any fly shop and there can be a bewildering number of choices. Fly fishing forums often have lengthy debates on various lines and arguments about one-half weight differences. And it’s true that many fly rods seem to cast better with some lines than others.
So where to begin to break through the confusion?
I think it’s understanding the terms and reference points. Rio has a great video that explains the standard and grain weights.
In addition, to breaking down the differences between grain weights and line ratings, the video discusses the effect that even subtle differences in grains, head lengths, or line diameter have on line ratings. And, you’ll not think about a business card the same way again.
You can see the video here.