We have a B49 with swept back spreaders, fractional tall rig. I've spoken to a rigging company about adding a hydraulic backstay adjuster. They advised that it would have little effect other than being able to bend the top part of the mast (above the forestay/shroud attachment point). I agree, but am wondering if anyone has any experience with a fractional rig and trying to adjust it under sail. The dealer installed the mast with about 8" of pre-bend. Funnily enough, Beneteau offer a backstay adjuster on their European model (Oceanis 50) which is essentially the identical boat as the US B49. Any thoughts?? Thx, Simon.