I don't fight gravity, if I can help it, when it comes to boat work. The easiest method I've found to take sails on and off, is at the dock. The docks are usually clean but I'll hose them if not.
With a newish stiff mainsail, pushing the head off onto the decks, we bring the foot under the boom (loose footed main helps with every mainsail move) and pull it out on the dock. With a helper (my wife these days), we flake it, roll it up and bag it, right there. Similarly with the genoa, we leave the material on the boat and just pull and stretch the foot out on the dock.
If we're lucky, it's highish tide like this, so the total vertical lift is very small. We lug the boom to the truck rack. Lastly, she and I drop the mizzen at the dock. There's only one moment when that move is a little tense.
This all gets done in a pretty pleasant few hours which saves hundreds on the haul out bill.
The bagged sails go on a high shelf in my shop.
I remember, this early November 2018 day was just as pleasant as the reverse day - bending on sails. This step is just a little less work. It was a great season, I was glad to put the sail bags on the shelf.