Depends where you'll be staying, but in most cases you'll need wheels.
Longbeach Shoreline Drive has a good bar restaurant on the south side - near Shoreline Village but I cannot remember the name of the place (it was a very good night...)
Being a port city you'd think it would have a raunchy section but it seems a bit tame compared to others. Torrance too is a conservative town.
Hermosa Beach near Torrance has a few bars on the road to the pier. One of them gets hot on a Friday (on the left as you head to the pier) but at least you can reach the bar on other nights.
If you are into Salsa, the Torrance Marriot has a Salsa night each week (check the day with them, it varies) when half the Latinos of South LA come out to play and is wall to wall talent if you can dance. Otherwise their sports bar is too quiet.
Enjoy the course, its a good one.