I'm in the process of making a new one for my Ross 780.
Well just the part that goes on the mast, as the original was a bit lightly built and has bent.
This pic is not mine, but its the same fitting. I'm remaking the mast bit with the forks out of heavier stainless plate. Local sheet metal place rolled the flat stainless plate to the same curve as my mast. Now I just need to cut and shape the forks and get them welded to the mast plate....Then rivet the mast plate on with some yellow poo in between.
I'm struggling with ideas about a reefing hook tho ??