Developing a water based arrester gear at Bedford in the mid 60s we did I hate to think how many run in trials. But clearly a real landing compresses the gear more than somewhat while the hook dynamics/angle following a high sink rate touchdown are quite different from the run in case. While the new hook shape at post 144 looks lovely for a run in, on a landing with the gear compreesed I would think it could wound the deck nicely/and or wear itself.