Ok, any other thoughts?

I've spent a couple hours the last few days with a cast net and not a thing. I set out 3 small hooks with worms/hot dog/chicken liver and nothing touched any of it for 3 days straight now. I have not seen a single fish or minnow dead or alive. Is there any other suggestions y'all have to see if there is anything there. Just seems like there is no explanation for the fish not being there. I don't know what else to do, I can't start over if I don't know what's left. The water is not quite clear enough to see if I take a dive IMO.
It just seems like for as many fish that were stocked it would be impossible for them all to be gone with no trace. This is only a 1/4 to 1/3 acre pond.

Especially with the warm weather. Before the fish kill I could snag the baby LMB and HSB on a fly or even a spoon, and you could walk the ponds edges and see huge pods of fhm. And now that I'm back to having a healthy aerated pond, they are all gone?