Probably not your question, but,
For tying the nose down with the nose gear extended -
I installed a single vertical chain link under the nose forward of the nose strut near the nose bumper with an AN-3 bolt through it and the nose bulkhead. Very stout. The link slides up and down (in or out) centered on the longitudinal bolt. When not in use it is held up inside by a light spring. It is usually covered by a piece of masking tape. I think most folks tying down level just tie the rope to the nose strut.
Hopefully others will answer your real question
