Wheel tire sling tie downs made from 16 foot long ratchet straps.
Wheel tie downs.jpg

I saw a tri gear Avid that was damaged by tying the nose wheel down tight to the trailer and the tail tight to a stand. The light duty trailer flexed and bent the fuselage. Tie it down by the main gear and tail only.

Also, I don't like threaded rod or bolt threads inside any tubing. I made smooth pins out of longer 5/16 bolts for both the front wing spar supports and tail support tube.