Within a short walk of the Rincon Surf n' Board is a pool hall/bar called Las Brisas. Attached to the front of it is Arturo's, a small taco hut. Customers sit on stools lined up around the edges of the hut while Arturo cooks inside. You can watch every step of the cooking process, and at the end you are rewarded with a delicious Mexican-style meal.
The owner is very friendly and will tell you all about the local-goings on if you're interested. This place is quick, healthy (lots of vegetarian options), and cheap. If you'd like to stay around to chat, that's fine too. Additionally, pool tables and some nightlife are usually available in the hall.