This is confusing (it's easy to confuse me with radio stuff).
How does a copper wire connection to the "grounding lug" become a dipole antenna?
I have a dipole antenna encased in plastic and "clipped" onto my backstay. I can't remember who makes them but I got it in the US. It works really well and it doesn't appear to be directional at all. Edit: I found it, check Gam Antennas
So amongst other things, I'm also a little puzzled at the comment that says to "keep the wire as far away from the stays as possible". Mine cannot possibly get any closer.
Maybe a sketch from the boffins will clear this up because reading the above just muddles things for me.