Along with the daily fish, does it makes sense to provide some sort of vocational training that an otherwise healthy person can take advantage of?
If a person was not able to take advantage of early education for whatever reason, but is currently physically healthy, there is still opportunity to provide for himself and his family by learning some vocational skills.
Choosing Oakland in particular has interesting connotations, considering that it is a major industrial center where there may be lots of opportunity for skilled workers.
Maybe even a reversal of the automation movement in favor of using basic labor for many repetitive tasks in order to achieve this altruistic goal.
Of course, there are still a great many people who truly could take advantage of the basic income experiment because their other options are severely limited for whatever reason.