Just got out here, no one really waved as I drove by so just pulled off a little on my own. It's beautiful out here!
So here is what I've noticed, sometimes you have to initiate the wave. A lot of people on the beach are friendly but don't really pay a lot of attention to passing vehicles, especially if the windows are all rolled up and/or tinted because there are a lot of gawkers who have nothing better to do apparently than to stop a few hundred yards away and watch people with their binoculars. But if you roll your windows down, make eye contact and wave, people are more apt to wave back and chat if you stop. Just my experience.
I think part of my problem was I originally had the windows up on the side facing the water since the breeze was coming from that side. My 4runner is also dark blue with tinted windows, very little chrome and a CB/HAM radio antennas.
I decided to explore the beach (wanted to see how far down I could make it before needing to turn around) and I had windows on both sides down and my radio turned up. I had a lot more waves and even a few smiles. I had one couple not wave back as I was leaving. If it wasn't 6:30 I would have stopped and seen if I could have hung out with a few.
I did notice as I was leaving there were a lot more people enjoying some freedom closer to the entrance then the old pier.