<<I saved the blade from the "tow bar" incident, with a half inch wide, 2
inch
long curlique at the tip as a "Bonehead of the week" award (name engraved
free).>>

This reminds me - the Cessnas I have flown have a too-short tow bar.
Someone told me - sounds logical - they do that partly to be able to stow
it, but partly to make it shorter than the distance to the prop.  I once
watched a 172 land with the tow bar still attached.  On my Cessna I made a
longer, folding tow bar that just plugs into one side of the nose wheel -
not both.  That way it will fall out if left on its own - I hope.  The bar
is so cool I should patent it.  I could be a millionaire.

Gary Casey
ES project
C177RG, custom tow bar