[Antennas] Securing Ladderline

[Deon Erwin ZS1ZL]

I plan to erect some ladderline in a very high-wind area and would like to
take the strain off the ladderline.

I was thinking of threading a PVC cord though the ladder along the length of
the feedline and then securing the cord on both ends.

Alternatively, if the PVC cord would influence the impedance of the
feedline, how about running the cord along the outside of one of the
conductors and tying it to the outer conductor with cable ties?

What are your views?

Thanks
Deon ZS1ZL