The 14 Dumbest Things In Star Trek IV: The Voyage Home
9. If You’re Going To San Francisco
KIRK: ...There she is, from the Institute. If we play our cards right, we may be able to find out when those whales are leaving.
SPOCK: How will playing cards help?
GILLIAN: Well, if it isn't Robin Hood and Friar Tuck. Where're you fellas heading?
KIRK: Back to San Francisco.
Sure, Kirk is a fish out of water in 1986, but he seems a little lost here. Perhaps he needs to turn around take notice that the Golden Gate Bridge is behind Spock and himself, and they are walking away from it. They’re already in San Francisco when Gillian picks them up. In fact, they're on the Marina Green. And, no, they're not on the Sausalito side where Cetacean Institute is purportedly located. The view we have of the bridge is impossible to get from the other side.
Kirk may be from the 23rd century, but by all indications in this and previous films the Golden Gate Bridge is still in the same place. Kirk must know where he is, so, to paraphrase Gillian, “Why the coy geography?”