Funny that I'd read the post and answers without watching the video. We're relative newbies and might or might not have messed up a lazy jack on an early charter after lessons.

Now that I've seen the video that seems like overkill. We started loosening but not releasing the lazy jack lines to give a little extra play for the battens. We also let out the main sheet and have a little more patience. Much less stress than the early days. It's a two person job with lots of hand signals but so far so good.