What does it look like from underneath the water surface? I have thought of this before but just never really like the idea of it hanging into the tank due to looks. Your idea here might just change my mind.
It's only a 3 gallon tank, so very hard to see underneath
The edges of the 'spoon' have moss tied to them, but the bottom is just SS mesh. If done on a taller tank you could also tie moss to the bottom to cover the mesh.