I'm looking for a way to disable new lists and libraries from being searchable. Ultimately, this site will be public facing and even though I can tell people to remember to disable lists and libraries when they are created, it's not realistic that this will happen. I don't want all of them disabled, but just lists that explicitly turned on.
I could swear I did this with powershell on a previous site, defaulting $list.NoCrawl = $true
but I can't remember how.