Reefing downwind in over 25 knots. Have done this a couple of times with just two of us, first time was when second reef line parted and we needed to take it down to third reef in big seas and cross swell at night, very messy outcome and it took about half an hour to get it tidied up. The second time we lowered the sail a foot at a time, keeping the
halyard firm whilst winching in the reefline until there was good tension on the leech, then another foot or so until the luff reef point gets close to the boom. It does not look pretty and if your boom is out too far the battens will bend forward around the side stay as the leech gets loose. It does come down but a pretty slow exercise, but you won't have to leave the
helm area to get it done. When we did this we ran both engines and furled the
genoa in case something bad happens like the
autopilot being overwhelmed. In the wee hours using
electric winches sucks a lot of juice and sometimes the instruments shut down which is what happened the first time (since fixed this with a Victron DC - DC voltage stabilizer)