In my previous response, you can see the stainless strakes that prevent wear damage to the wood.
I should mention the strakes are longer than needed by just the jib sheets because they also prevent wood wear should the spin sheets be taken to the winch in breezier conditions.
I use strakes wherever a line causes wear…traveler, backstay or even the bow, where strakes to either side of the forestay on the raised rubrail lip prevent paint/finish wear that a mooring bridal would cause.
IMO, chocks are problem-causing line-catchers and were replaced by strakes a long time ago.
Strakes save the coaming edges and cut down on maintenance. The ones in the pics are long because they serve the spin sheets as well as the jib.
Hope this helps.
BB