cal 34 - double headsail modification
"I''m guessing but - is what you want to deal with here is providing for an effecient, easy to use low sail-area setup for offshore use in high winds?" That would be nice but that is not what he is descibing. He is describing and efficient sail plan that will be harder to use in light, moderate and heavier conditions. In a sail plan like the Cal 34 adding an jibstay (the inner most stay when there is also a headstay) on which a small jib can be set really will create an object that will in the way major league and will be too small to use in winds much below 30 or so knots and too big to be a good storm jib. If he goes the route he descibed or even if he goes the route you suggest on this particular model there is a lot more to engineer than the stay attachment.