I read a lot about people diving down to get the 12.000 repeatedly but there is a suitcase with 25.000 in it and it is much easier to find. It sits on top of an old submarine.
Now I went there with Michael on a Dinghy as it is nice to dive without having to think about air. The thing is that the suitcase respawns when you switch caracter, so I thought why not get Trevor out here as well. Switching between the two repeatedly would generate a lot of money fast as you dont have to reload all the time.
When Trevor got there Michael was still there and Michael asked if Trevor wanted to hang out somewhere - i did not respond but dived down to get the 25k.
Afterwards I switched back to Michael but suddenly he was now in the middle of L.S.
I do not know how to make them both stay there but it would be awesome if the could - anyone got an idea?
I have a picture of the exact spot of the suitcase but I cannot seem to workout how to include it here