Ok, I'll play....
The walking cable can be a vital, if unapproved, mod to a set of floats. i asked for one to be installed on a new Husky I ferried back once. It made all the difference when I had to drift into dock in very tight quarters.
That said, sometimes these useful, unapproved installations are not attached properly to plates under the cleats on the decks of the floats. We get approvals for mod to assure they are safe. So is it unsafe when the walking wire on a fairly new Cessna 206 rips off a cleat under the weight of the generously proportioned pilot owner, and the plane drifts out of control, with the pilot now hanging on to the rear spreader bar? It wasn't me, and both the plane and pilot were safely recovered. That paticular C206 later had that really cool little copilot's door STC installed!