Join Date: May 2004
Location: Long Is.
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Oops, I missed the forestay clips. With those you definitely cannot roll up the sail. The usual jib construction uses a rope luff with hanks for the forestay. This gives you some control over sail shape by how much tension is on the halyard. For the old roll up around the luff furler that I thought it was, the hanks are replaced by a wire in the luff. This lets the sail roll fairly smoothly around the luff. The wire let you set up enough luff tension that the sail does not sag off badly. Frequently these systems were left up full time (to the detriment of the sail).
Maybe a little more description would help. What is in the sail luff, rope or wire? The extra two cables that you mention do not show up well in the pictures, can you say more about them or post more pictures?