would this be easier with a rope luff as sail could be folded and tied down. What is the advantage of a wire luff. Any advice will be gratefully received.
A bolt rope is used only in combination with a Genoa reefing spar. In all other cases the Genoas must have a SS wire to take the rig tension.
When a reefing spar is used there is a SS wire inside the spar that takes the rig tension. The bolt rope is required to keep the sail in the sail groove of the reefing spar, similar to how the main sail slides in the mast groove.