I went down to the boat on Sunday and found my boom on the deck. After a close inspection, I see the rope that extends the vinyl covered wire from the top of the mast to the boom has finally given up the ghost.So my options are somewhat simple.1. Replace the original rope with a replacement. This would require putting an eye splice in one end.2. Replace the original rope with an extension about 30" of 1/8" 7x7 stranded wire which is also vinyl covered and two D shackles.Option 1 seems to be the easiest but instead of an eye splice, I would use D shackles. So the question is simple, but lacking the experience, I am asking those that know for guidance.What I would like to know is recommend rope diameter and recommended knots to attach the shackles.Option 2 would probably last longer, be stronger, but more costly to have made. I think I've given enough info. The actual topping life is serviceable and still intact at the top of the mast. Just need to extend about 30 inches.Thanks!