It will last for a year so it is a money saving purchase.
Look at the Hints & Tips for the Laser Traveller by Steve Cockrell
See the DM20 specs below
DM20 - The world’s most creep-resistant ultra-high molecular weight polyethylene fiber is even better than previously thought.
Dyneema® Max Technology is an innovative platform technology that will extend the use of Dyneema®, which was already the world’s strongest fiber.
DM20 is designed for long-term permanently loaded systems, such as mooring offshore production platforms.
Mooring ropes made with DM20 outperform all alternatives, surpass industry standards for deep water permanent moorings, and will outlast the operational life of the installation. –
With DM20, Dyneema® has taken a major step forward in the development of fibers with extremely low creep, Boesten adds. “No other HMPE fiber comes even close to these creep properties, and we are confident that no other failure mode dominates over creep in DM20.” –