I hired a plane to fly over Dodger Stadium for 15 minutes ($300) during the District Assembly around 1982 or 1983, with a banner that said, "1980 WT Shakeup" with a recorded message number. Got a few calls right away, but over the next 7 years I had three familis thank me for doing that, as they remembered the number and wrote it down later, some in the bathrooms.
Then I got the calls as the years went by, "We are now out and just wanted to thank you."
It really made my day to get calls like that.
Of course, the WT made sure Dodger Stadium banned any flyovers after that. :-))
Randy