Just in case some of you misunderstood what SteveFLHTK was talking about, the one that requires drilling several holes is the folding metal brace from eglide goodies, not the retractable cord that is the subject of this thread. That one just attaches to the stock points in place of the stock cable.
I mentioned the one from eglide goodies in an earlier post as being something I would be much more likely to trust than the new retractable cord that looks like an oversized security badge cord. And drilling a few small holes for pop rivets is no big deal. It's the same method used by the manufacturer to attach the hinges and latches to the TP. I believe you will find that it's all hidden behind the passenger backrest if you're worried about appearance.
Jerry