Sounds like he needs to go fishing for carp on Murtaugh Lake... Catch ‘em. Knock ‘em in the noggin’ and make sure they can float on top the water and watch the eagles enjoy the meal.
“Telephoning” or fishing with dynamite would work really well.
I don’t know about eagles, but I’ve never seen an osprey pick up a floating fish. I’ve seen them turn, swoop down to take a better look and then go on their way, but never pick one up, even if flopping.
This was observed over many years on both salt and fresh water.