Re: make a gale sail
I have looked at Gale Sails and have difficulty imagining how you would get it rigged in the conditions where you would need it. In the demo videos it looks really easy but there are no waves and it looks like 12-15 knots of wind. Have you looked at options that would allow you to use your storm jib on a removable inner stay or even without a stay if it has a wire luff and you can tighten the halyard hard. Won't point well, but that is unlikely to be a deal breaker.
In South Africa doing lots of boat stuff. Departure north from Cape Town around December 15th. Arrival in the Caribbean around the beginning of February, after 5300 miles or so.