I don't know what has been out there in the past for transport parts; however, the transport kit I purchased from Kitfox uses drilled bolts, drilled pins, castle nuts and "hairpins" to secure the transport braces and lockback braces. We have used this to transport a couple kitfoxes. Very secure and quick to put together and take down.
I do keep extra castle nuts and heavy safety wire in the plane in case of an "oops" with the hairpins in the tall grass.
My wife sewed up a tail pad with foam inserts which the flaperons rest against.
For a belt and suspenders approach - have to agree the rope safety is a good idea.