Hello,
it would be good to add some fish activity on the surface to the game. That way the active spot could be recognized by sight/sound and one wouldn't have to search for spots on the web and forums. What I have in mind - hunting predators would chase small fish, carp near the bottom would release bubbles and sludge, small fish could be attracted by throwing bread on the surface, etc..... If you've ever been fishing, you know what I mean.
Čabla