If you use a shackle with a big grip you will still have to use a thimble.
Use of shackles is a good solution when a heavy-duty thimble won't fit or
you need to connect an assembled thimble to another closed-loop. I ran into
that problem when connecting my Phillystran to my torque bars. See
www.w3yy.com Projects | Phillystran for pictures. Use high quality shackles
and you should be fine.
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