3-strand sheets

[Brion Toss]

Hello,
Round bronze thimbles can be gotten from a sailmaker, or perhaps directly from a foundry like the one here in P.T.
As for rope selection, a single-braid Dacron will be more hockle-resistant than any three-strand, as well as less elastic, easier to splice, and more supple. I definitely subscribe to the best-tool-for-the-job school.
Fair leads,
Brion Toss