Davis Fender tender. Yeah those things are a joke. As well as those wire bolts, which squeeze the shroud to attach things to it. Ugh I hate those. The cajun probably wouldn't work to lock the tiller in a storm, I agree, but at that point can't you just lash the tiller in place with a constrictor knot?
I guess the various tiller add ons do offer some convenience in that situation.