We use one inch three strand nylon for the bridle
on our Privilege
39. We have stainless steel
thimbles on the end of the bridles for attaching to the the ABI bridle plate using D-shackles.
We have only had two bridles in fourteen years. We kept one of them spare in the event there was a chafe problem.
We have never broken a bridle, but I suspect that salt
crystals and sun have weakened them to some degree. Nevertheless, they are still going strong after 14 years.