i have a roller furler that i designed that works great. the whole forestay from the bridle to the top of the upper forestay at the mast turns. this includes the upper forestay. check out www.mech-solutions.com/dave/furling.htm i was just thinking that if i had a 1 piece forestay, there would not be a chance at all of the shackle coming apart. i was thinking about a wire from the bridle to the mast tang and down a few inches to a loop for the halyard with a sleeve on the forestay with a loop fof the halyard ring. i attached a really crude drawing. the red boxes are nico press sleeves. the blue thing is the ring that the hook at the head of the sail hooks to.