M0nica
In which case Norah, what wall is the retracting reel attached to? you presumably need something to attach the line to each end?
As I said, horses for courses. I have nowhere to fix two ends of a line, but I do have a tucked away outside utility area close to the utility room and out of sight of the rest of the garden in which to fit a whirligig line.
Indeed. What's tolerable, to each person, in their garden.
As explained: retractable line has hook which attaches to ring fixed into an exterior wall. Easy, the hook retract, tiny ring stays.


