If the inner stay is removable and is only there to give you the
option of having a low, more inboard rig, for heavy weather, I would
probably go with just runners and set them up whenever the inner stay
was set. The original poster though said that his mast was pumping.
That indicates a serious need for some intermediate support. I
wouldn't make the inner stay removable in his case. It makes tacking
a bit of a pain with big jibs but also provides a great hand hold on
the foredeck and the ability to have a double head rig in lighter air.

The tracks you have are a nice refinement but not something I would
suggest in the "keep it simple, keep it inexpensive" department. It
takes a lot of structure and planning to support the full strength of
the backstays all along a track even though it does spread the load
out a bit.

--

Roger Long