[cdavisdb]

That is a pretty standard scoop we use in marine air conditioning, sea cock is extra. Running long periods, like air conditioners do, these will pull plenty of grass into the sea strainer(if there is one) or into the pump if not. If you are planning to use the bait well for short periods, its probably ok, If you have a lot of grass and intend to run the bait well for several days, get a strainer.

The scoop also helps keep the pump pumping while under way. Without one, the venturi effect can suck air back into the pump. A centrifugal pump (most pumps are centrifugal) won't pump squat with even a little bit of air in it.