You thought of getting some domestic laying ducks Walshie.little duck house on the side of the pond and lock them in every night.
We had about 9 I think it was a few years ago. Dug a little pond and they were great lived amongst the chickens we had.
Only counted 8. 1 night while getting them in. Looked behind the duck house and 1 was sitting on 6 eggs so left her be
A few weeks later they all hatched.
I did have about 6ft of chicken mesh all round the bottom of our big garden to stop the fox getting in though.
The wife does a lot of baking and the duck eggs were great for that.