Yes. I have some investigating to do. The TWRA gave me some pointers to find out where they are coming from. He also recommended cameras.
I'm with you. I have zero issues shooting at my pond. If there were safety issues, obviously I would shoot. I'm not sure how this turned into gun safety thread... I have plus 50 years shooting experience. Besides, such issues are for those that can't hit their target.

Thanks guys, I'll try to remember to report back.