It is "hang loose" or in the 70's was more "hang ten" on the Rock (Oahu) with the coastal surfing crowd, and once in a while seen it in SoCal but not often. I spent 6 months on the Rock TAD in the mid 70's during the 5 years that I was homeported in San Diego. And of course have to stop there for a bit on the way to a Western Pacific deployment.
Just got back from the Sunset Country of Ontario with the Admiral, the Skipper couldn't make it this year he is closing on his house in Boston and downsizing. His other home is in Oahu easy to figure out which home he spends 6 months at. He purchased his Oahu house in the early 80's. The 3 of us have been stationed in Pearl Harbor at one time or another and when calling each other will often greet and close our phone conversations with Aloha. None of us will give each other the shaka though, that is for the young surfer crowd. More times than not back then it meant hang loose, usually along the lines of Eh brah lets go smoke some Pakalolo. Had no idea that it is now called the shaka.
Never dreamed that I'd end up in the Upper Midwest. The one thing that is consistent across the nation in rural areas is the one finger salute in acknowledgement or respect. Subtle and that is more my style and what I do, like this
I picked that picture because I had a 67 Mustang with a 289 and it was burnt orange as well. It was my last car before I got my first 4x4 a 77 FJ55 Iron Pig Land Cruiser and haven't owned a car since, only 4x4's. Been more than a few years.