Old school baitwells were transom mounted boxes,
with a pickup tube so that the forward motion
of the hull resupplied the water while on plane.
No electronics, no pumps, no valves,
just a drainplug to remove at the end of the day.
Like on my 1987 Boston Whaler
Waterflow holes just like an old shrimp bucket...
Hinged and locking lid...
Sumpwick hanging out the low point drainhole
and the pickup tube just visible underneath...
Even has an original FCA decal on the transom,
from just prior to the ban the nets campaign.