Yep, I should have deleted that question, per next post.... Your forestay is integrated into the luff of your jib, so as you said from the beginning, the jib holds the mast up and needs no halyard. So, per your original question: you can use the halyard (red line) for raising a jib sock type sail cover to protect your jib when it is furled, as a halyard for raising a spinnekar/gennekar/asymm, or as a jib halyard if you ever replace your existing setup with a traditional forestay. Otherwise, you don't need it. Just tie it off at the bottom of the mast and sail-on!