Same thing happened to me, was out at north pine dam walking the banks flicking away when I came across a group is Asian people using cast nets and drag nets and keeping every single thing in the net. I politely let them know that it is illegal to use a cast net in fresh water inpoundments. I was told to go away, we do what we want.
Called fisheries and was told, sorry we are unable to attend at this time as we are short handed with officeres for the time being.