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.
Heading back to Lake Ontario for this summer. Now in Bermuda and heading to Long Island Sound in the first week in May. Then on to the Hudson and the Erie Canal.