Join Date: Feb 2011
Location: San Francisco Bay area
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One important thing is to heed Harken's instructions, concerning the angle the jib halyard makes versus the forestay. If it's less than a certain angle, they specify a halyard restrainer on the mast.
Having suffered a halyard wrapped around the furler / forestay, I suggest a restrainer if in any doubt. If it happens, it'll be on a windy day in the middle of the ocean. Then you get to wrap the jib by hand around the forestay.
Harken also recommend their ratchet block for the furling line. This is good advice too, it really helps deploy the jib in a progressive way instead of with a big bang when it's windy.
Bristol 31.1, San Francisco Bay