[Elecraft] Insulated Backstay

[Copper]

I'm this >||< close to buying a cruising sailboat (a Westsail 32) and can't
seem to find any info/detail on the recommended length for an HF (insulated)
backstay antenna.

I thought I'd rememberd this topic being discussed in the maillist before
but I've searched the archives and nothing pops up.

Since I know nothing about them I thought I'd ask if anyone has any
experience/advice/tips/suggestions/pointers/websites concerning insulated
backstay antennas?

Thanks,
Mike K5PU