Rex,
Your experience has been that adult LMB can't easily capture (feed effeciently) on 4"+ tilapia until they become sluggish or lethargic in the falling water temps in the fall or winter?
In my pond, that doesn't have a lot of fish hiding cover, I've seen packs of 12"-14" LMB chase 4" Tilapia and the Tilapia actually "swim" up on shore to get away from the LMB. The pack will wait until they flop back into the water..... While it may not be easy, or effecient, if a limited amount of small Tilapia are stocked, they can get wiped out in a hurry and will preclude a sufficient breeding population for the pond.
