I'm probably missing something but can't you just swage a hard eye onto the inner forestay wire and discard the SS part. I would use flexible stranded wire the same as used in wire halyards. That could also be spliced onto spectra braid if you wanted to for some reason. My main halyard
is like that. You can always use a spectra lashing between 2 eyes in the bottom of the wire stay to preset the tension rather than a turnbuckle.
My own attempt to use a Schaefer furler
on a small inner sail in strong winds wasn't very successful. The sail had a heavy spectra luff rope
built in and was tensioned by an electric winch
in the cockpit
. It was impossible to get the luff tight enough in my case as the spectra was long, back to the cockpit
. I know that others have good setups but every boat is different. A stay attached to the mast
with a separate halyard
and no furler
would have been better.
I'll be interested to find out what works best as a removable inner forestay seems a good idea.