I'm trying to find OHV trails that lead to a lake or river that I can fish at near Socal. I know Socal barely has any remote lakes but I'm willing to travel to get to places hopefully within less than 4-5 hours
Off Road with remote fishing spots near Socal
Andhon Welcome to Ten Digit Grid!
It's not quite "Southern California", but my wife and I were able to camp pretty close to a big mountain lake while there. We didn't fish though, so I can say what's swimming in it.
I would check out Coyote Creek Trail: https://www.tendigitgrid.com/d/112-overlanding-in-coyote-flats-california-coyote-creek-trail