Re: Leader/tippet importance
Strength vs visibility - lower the 'x' the stronger but also tends to be more visible to the fish. Also ability to turn over a fly - fishing a small dry with 2x might not give a very subtle presentation. I tend to go with the largest tippet a fish will let me get away with. Around here I usually start with 5x or 6x for dries and nymphs and go from there.
- William Jensen