For jib and genoa sheets I use 5/16ths Samson WarpSpeed. Last year I
moved down a size on the theory that the genoa would tack faster and
better with smaller diameter, lighter sheets. I'm very happy with the
results and would never go back to 38ths. Perhaps surprisingly,
nobody has complained about the smaller diameter sheets being hard on
their hands and several of them don't use gloves.
For main and jib halyards, I had Thomas Hardware make up some
low-stretch rope halyards with covers at the bottom. I don't remember
what kind of rope it is. However, you have to keep checking the top
end for chafe where the halyard comes out of the sheave. I've had to
cut a few inches off the top end of my main halyard after a year or
so due to chafe.
