So, we would simply lower and reattach the flag on the staff even though we do not have a lanyard or rope to raise and lower the flag?
That is the way I read it. No matter what you do, please display the flag. Nobody will condemn you (I hope).
Once, when asked what he would do if somebody was displaying the flag wrong, a vet said " I would feel good that he was flying the flag".
For flags that can not be displayed at half-staff (such as a house or porch set) attach a black streamer to the spearhead (top) of the pole allowing the streamer to fall naturally.
A flag that is mounted on a wall or in a window also can not be displayed at half-staff. A black bow-knot either with or without streamers is placed at the fastening points.