While I'm sure the bathrooms are cruisy, it is a great beach area to hang out with your gay brothers. I would also warn that many arrests do happen along the Santa Monica beaches. Stick to Grindr.
The gay part of the Will Roger's beach is commonly referred as the "Ginger Rogers beach".
If you have a GPS, point it to the Marix Tex Mex Restaurant in Santa Monica:
http://www.google.com/search?q=marix...c8a906aa80097c
If you are driving up PCH from Santa Monica. Look for Patrick's Roadhouse next to a gas station near the stoplight at Entrada Dr. Turn right up Entrada.
Marix Tex Mex has a large lot that you can sometimes park in during the day. Also turn right up into the residential area for street parking.
There is a tunnel just south of the Entrada Dr. on PCH that will get you underneath PCH.
As you exit the tunnel, the gay tend to hang out straight ahead from the tunnel or a little to the left.
Seasoned go'ers will put their swimming suit around their necks as they play bottomless in the water. Fun can be had by all!