Purchased property 4 months ago with a 2 acre pond...about 20 ft deep at th dam and spring fed...we catch all sizes of bass ... we average about one crappie a trip and usually it's a big one...there dosent seem to be a lot of them and not many small ones...no bluegill at all....but of course over run with green sunfish....I'm not in a situation to drain and poison....do I have any other options?