We just returned from a sailing from SF where we used the parking near the pier (at 80 Francisco, not immediately adjacent to the pier). It's still $20/day. It's still staffed with some level of security. So it met our needs to a tee. But for a 34 day stay? I'd run the numbers to compare it to the parking at SFO, being sure to add in taxi , limo, or cab both ways.