Oak shores is a great place to have a picnic, with picnic tables, BBQ pits, and large shaded areas. This area also has roped off swim areas for the kids to swim safely. Oak Shores and Smittle Creek are a quick 25 to 30 minute boat ride or drive away from the boat rental.
For fishing info, download this brochure provided by the US Bureau of Reclamation.
For fishing reports, check out: www.westernbass.com/ncalifornia/featured/view.html?id=0000006
For details about the fish in Lake Berryessa download this brochure.