Been using the carbon/kevlar one for almost 3 years. Been through many week-long regattas, some with big crew. Never had a failure.
I switched over for this reason as well...was getting holes through the deck & hull when a new crew jumped aboard during beach launches. Got tired of filling holes!
But, these are also significantly lighter than the stainless hook & ring systems. Plus they are safer to use (see the recent Trap Harness Death thread in this forum).
There is a plastic version..but those have a high failure rate. There is also an aluminum version which should be fine (but heavier).