Join Date: May 2006
Location: Sarnia ON
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You can use it but your furling sail will be very high cut at the clew and so you lose sail area. Also if the sail was purpose built for furling it may be cut differently, possibly flatter and may have padding along the luff to shape it when it furls.
It is also likely a heavier material than you would normally use on a number 1.
It will work but not as well as a regular cut sail.