But a rope handrail is there to provide stability. It must be installed tightly enough to be functional, so a lot of droop means a wobbly unstable rail.
Pier and Dock Rope Rails
For these decorative applications, natural fiber Manila is an appropriate choice. You can compensate for its tendency to shrink in length when it rains by leaving plenty of extra droop. No big deal.
For this application our premium UnManila is a better choice.

This is the house on Ono Island in Orange Beach, AL where I installed your 1 1/4″ UnManila rope.
Todd

This is the house on Ono Island in Orange Beach, AL where I installed your 1 1/4″ UnManila rope.
Todd
UnManila as Decorative rope
Our UnManila rope doesn’t shrink or stretch, so it can be installed more tightly.
And it’s waterproof and UV stabilized for long life, even in locations where it seems like it’s always pouring rain and it’s always intensely sunny.
There are other synthetics that can work – polyester, nylon, polyester composite – but they are expensive, generally white in color (when new – dirty gray before long), and don’t have the nautical look that our premium UnManila rope has.