"I have some fish on the back side of my pond that may not even know I have a feeder"
LOL not unless you are talking about on the back side of the dam.
Look at the The Cutting Edge in PB mag. Fish will travel a long way. You would be shocked. Miles !
"The maximum distance traveled by a hatchery fish was 3.03 kilometers in a 24 hour period, which included swimming the distance of the lake into an adjoining lake."