I'm from the Bay area and would like to attend a war sometime. That being said, my Job is only a summer thing so I'd probably be out. I can pread the word around here though to see if anyone is interested.
I think that he just attached the manta ray to show his pop points. He even said that it was impractical and would ever be used. Give the guy a break. He came up with something original, isn't that enough? Seems like a lot of people are here to bash his idea when they haven't come up with anything on their own. I personally like the idea of the pop points and plan on trying a few out on my guns. Well done.
I did this about 5 years back but glued the sheets to a sheet of 3/4" plywood. I cut a 2'x6' section out of the bottom center of the the plywood before glue-ing and add some hinges so that it would stand on it's own. Then I added a bit of trim around each edge to pretty them up a bit. I use them as signs in my businesses to display daily specials or whatever community event is going on.