Between Gualala and Point Arena there are a few public beach access parking areas, but I think they may charge for day use nowadays. Hearn Gulch, Schooner gulch/beach, etc. Also Gualala Point Regional park has a big beachfront where the Gualala River enters the ocean, but I have never fished it, just played the golf course there a few times, and it looks very fishy. Also try the Gualala seafood shack if you go to Gualala, it's quite excellent.