Re: Beneteau 40 (Oceanis, 2009) gennaker??
My potential problem was with an ordinary gennaker. The gennaker halyard is VERY close to the top of the forestay. It goes through a "spectacle" that is offset to the starboard side of the mast .... and everyone that looks at it, says, "that's strange!!!" .. but I haven't bought a genakker yet. It would have a sock and not be furled. I will want an expert opinion on the tangling issue before I get one.
You mention a FURLING gennaker or code 1. A friend has a furling gennaker that is nifty. You raise his gennaker with the normal halyard but it has its own built-in rubber forestay. Easy to fly. It has its own small furling drum at the bottom and as you pull its furling line the bubber head stay sort of winds up like an elastric band until you get a few twists in it and then the gennaker furls. It means you can fly this single handed. He has a small metal extension on the bow roller that acts like a short bow sprit .... this is what the bottom of his furling gennaker attaches to.
Hope you are having great sailing in your 40.