geese are good at fertilizing and trimming grass neatly, but ducks will destroy it. I buy these outdoor eco-rugs https://www.lowes.com/pd/EcoRug-Green-Rectangular-Indoor-Outdoor-Machine-Made-Area-Rug-Common-6-x-8-Actual-6-ft-W-x-8-ft-L/999992360
then I use mixture of sand and pea gravel all...
ducks always kill grass especially if it is anywhere near a water source. and even the sky can be a water source (rain) if its wet, the ducks drill into the sod, and drill and drill and drill and drill ... until it is gone...and just a big mud slick is left
Its fantastic!
I think if you put sod anywhere near it , the sod will be killed very quickly.
my brother invented a way to use stones around his pond that looks really nice , let me see if I can get his pic and description for ya