Why not Pete?
Pete,Why not do the cable and sheave system?I am thinking of doing that type of system on a newer boat I am looking at (my old First 32 has a Navtec on it, but will be sold with the boat, and is also a single-backstay arrangement). There are several ways I can think of to do it with a split backstay (which I will have next):1. Plate & sheave arrangement where the plate is pulled down with a block and tackle and the sheaves "pinch" the split stays together and effectively shortening (tensioning) the backstay. The T-Ten I raced on for years had this and it was pretty reliable and fail-safe.2. Upper backstay terminates with large wire sheave, split backstay is a wire that deadends on one side, goes up through sheave, then down to block & tackle system that tensions it (with a wire piece strung between block beckets for fail-safe).3. Same as 2, but using a Navtec to create the tensioning (not enough travel on Navtec for system #1).All of these would be fail-safe in my mind, in case the rope part breaks.What are your thoughts on each and why?Thanks,Tim