Dave -
Yup, first, pull the battens.
I am MUCH, much younger than you (at 76.5), right ?? And, until very recently, sailed a much smaller boat, an NS 22. And … I always struggled with my damn sail until I, very wisely, asked a buddy for help.
I, like Mike, would do my best to “bag the thing up, somehow” at my slip (not at a mooring - that’s a little more complicated - at least, I was able to use a dock cart), Then, I’d get it to clean spot on the club lawn and fold it properly, etc. Even folding the sail nice and smartly is WAY easier with help.
What also happened to me (when I did this task solo) is that I ended up tearing my sail cover as I tried to simply drop the sail into the cover, stuff it (with great difficulty and mucho bad language and buckets of sweat) into a large-ish dock cart and roll it up onto the lawn.
Bottom line - it was a bitch of a task to do by my 5’6" self. It was SO much easier with a buddy even if the buddy knew NOTHING about what was going on. You just need some beef, not brains (though brains do help, it must be said).
That sail is big and heavy-ish - get help. Save your body (and your sail). We all know that Mike is a veritable Superman. This is one of the many reasons that we admire him (not just because he went electric eons ago and has never regretted it).
This task is a drudge - Did I mention that I feel it’s a good idea to get help ???
PS - Very seriously, make dead certain that the sail is BONE DRY before you bag it up. Even if that entails motoring around on a dry windless day to dry it out. Otherwise … mildew and mould. Not nice.
Ernie A. in Toronto