Double securing the job furler in harbour?

[dunedin]

Ordinary precautions: takes seconds....

1) Furl genoa tightly,
2) Two turns of sheet round clew,
3) Tie stopper knot in furling line so drum can't turn much.

No guarantees, but removes most of the chances of damage. Obviously no old frayed lines, and take sail off if going to be left months. I look out over harbour from home, and almost always someone's genoa will get wrecked every summer gale. Not always scruffy little boats, sometimes nice boats and quite expensive sails.

That was exactly the spec of the well kept boat which lost its genoa yesterday. The single point of failure is the furling line, with some hidden weak point or sharp point.
Seen quite a lot of the full height sail bags round the genoa- but even the best fitted ones seem to flap in a F6, and flap like mad to the extent of shaking the rig in a F8+. They are mainly an anti UV thing I suspect. For wind protection think I would prefer just the halyard round approach.
But it seems like a strong rope from the tack fitting to a cleat may be added to my list of leaving the boat preparations.

(As discussed previously, removing the genoa each time may suit some small boats and /or big crews, but not an option for one wimp and a fully battened jib - it’s a two person job and a strong back to carry below. Instead I bought a cheap second hand “winter jib” for over winter sailing. What is an “off season”?)