Please avoid underwater plaques at these locations. While we all love the water, we need to remember that as divers, we pride ourselves in underwater conservation, which involves not leaving anything behind. The ocean might not be a bad idea, is there's lots of real estate, but a place like Ginnie is very limited space wise, and you know the old saying "What if everyone did this?".
I'd also point out a few plaques that were in Ginnie (and other springs) disappeared last year.
