Recently the sails had to be doused for re-rigging and l was alone.
My main is loose footed and fully battened so that was no issue in the dead calm l waited for, for days. I used a full length bag. It was reasonably easy.
The genoa was a bit more finicky, bringing the foot back next to the mast with the shroud a bit in the way. Letting the halyard down gradually and flaking it, bringing the clew back 1/4 of the way. Had to run to and fro along the sail few times to correct the fall. It was much easier than with a hanked sail, thou. It just fell out of the foil by it's own accord but the last two meters.
Folding and baging it was no great task. It went into a square bag.
I had to do it again, in reverse, just after the rigging has been done and l waited for days before the wind sufficiently abated. I did the job in calm weather in the dark at the light of the new bright l.e.d. deck light.
Then the furler fell apart at the drum, the grab screw decided to leave to the water and it took the sail pre-feeder with it, so it had to come down again. I packed it into the full length bag this time, like an experienced old sea dog, in ten minutes. It was dead calm by the time.
Mine is a smallish yacht, l do not want to contemplate the same job on a much bigger boat. Let alone in a blow! No, thanks.
Jobs like this need at least two people.