I usually use a clinch knot to tie a tippet section to the bend of a dry fly (or sometimes a wet fly). I pre-tie some of these at home in good light and then I can just tie the top fly to my leader as usual. I bought an inexpensive leader holder at a fishing store. I see now that Orvis has a new tackle storage system for this that isn't too expensive.

I also use the method of leaving a long tag end on the tippet to leader knot and tying a fly to the long tag. That works as well.

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Fish more, work less!