Question: When fishing for salmon from the bank in the San Francisco Bay with spinning lures, is a single barbless hook ok or does it have to be a barbless circle hook attached to the spinning lure?

Answer: Barbless circle hooks are only required when fishing with bait and angling by any means other than trolling. Since you're not using bait, no circle hooks are required, even though you are not trolling. You must be doing both things - using bait, and fishing in a manner that is not trolling - to be required to use barbless circle hooks. In addition, you should be using no more than two single-point, single-shank barbless hooks with your spinning lure (California Code of Regulations Title 14, Section 27.80.)