On Wed, 24 Oct 2007 23:22:27 -0400, the_bmac wrote:

Have any of you re-fitted with a split backstay tensioner? Can you share details about how you
installed/reinforced the attachments through the deck?

I did that with one of my old sailboats. I added two chainplates, one
on each side of the transom to anchor each side of the split stay. The
only attachment to the deck was a pad eye for the lower end of the 4:1
adjustor tackle. Both the chainplates and pad eye were reinforced
with backing plates. The upper end of the adjustor tackle went to an
arrangement of two blocks that rode down on the split stays to
increase tension as the tackle was lowered.