I think they have made it really hard to jump off golden gate bridge. They don't allow pedestrians to walk across anymore. In order to do it you would have to start driving across and stop car somewhere in the middle with constant traffic moving. Either 3 or 4 am when not much traffic or rush hour when traffic slows and stalls would be best bet. But then you would have to climb over a big tall barrier to be able to jump off. I don't think impossible but extremely difficult and I think you would have to be super athletic to pull it off. Best to try another bridge or tall building. I think building is a better option. If you jump off a bridge into water, the jump impact is not likely to kill you and in SF Bay you would freeze and drown or sharks would eat you. All of those would be painful and take a while. If you jump from a tall building onto asphalt or concrete the impact should kill you instantly. I remember people saying that if you jump from a really tall building like empire state building that you probably would have a heart attack and be dead before you hit the ground but I don't know if that's true. I've had more than 1 person tell me that tho