I use the Wichard chain hook with the spring catch. I'm very happy with it (thimble spliced into snubber and shackled to hook). I do have one caution - be very careful if you bring the hook over your roller still on the chain. I have bent the pin once and getting it straight again was quite a challenge.
Here are my snubbers when they were clean and new:
Brian -
I'm leaving Annapolis on 1 Nov for the BVI - should be there somewhere around the 12th(ish). Hope to look you up if you are in town.