i ALWAYS always take my FF, in Bays & LJ.
(a) its so simple to include on any trip.
(b) even in the bay, i want to know depths, drop-offs, etc.
i never take a bait tank into Bays, but i only use artificials in Bays.
i am mainly targeting Bass in Bays.
i gladly catch any Hali that wants to bite plastic or a crank bait.

but i'm not "focussed" on Halis, and i release ALL bay fish anyways.
if you want to fish live bait in Bays for Hali's to keep & eat,
is the only time i would think someone would need a Bait tank in Bays.
or, if you do a Bass trny in Bays, use the bait tank as "live well" until fish measured/recorded.
.