Thanks to everyone who replied. I ended up with 50' of 27/64" double braided nylon tied with a hangman's noose directly on a screw link. I thought about using a carabiner attached to the rope (And have my spare rope tied to one), but I thought it might not hold as well. I would liked to have found a double braided nylon that had a backsplice, not even Fisherman's marine in Portland had one. Anyhow I think the hangman's noose will work well. Thanks again for all your suggestions.

-Stephen

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Pray for rain...