So, I'm asking this here because I think there are some people on here how might actually know something about the subject.
I'm planning to install (not myself obviously) a UK Charlie Christian pickup in a new Loar archtop guitar. I would have installed it in an Eastman, but that would be a real waste of well carved top. Plus I picked up the Loar on ebay for $500. Not back for a pretty, but otherwise weak acoustic guitar.
Anyway, the Loar is parallel braced, and I'm guessing such a wide pickup will invariably involve cutting through the braces. So what happens then? Does the top sag. Do they do something else to keep the top afloat. I know the CC pickups are pretty heavy, so I'd expect they have to do something.