On Tuesday, August 25, 2015 at 4:15:08 AM UTC-4, Craig Lowrie wrote:
We have fitted cable restraining straps to our two Pawnees... They save
the plane and prop in most cases with this or a strut-end failure (of
which we have had a couple)..... Craig

From what I understand, there are at least two ways to rig the restraining cables that protect from a strut failure. One way is to anchor the cable to the bolt that broke. That is less than ideal when the bolt breaks.