I have never seen a pond where BG will not train to eat pellets over time. Even less so with GSF and HBG. Now if LMB predation is bad (bass crowded)then BG will avoid feeders when the LMB are around until they get big enough to avoid LMB predation. Cover in the feeding area will help the BG , GSF and HBG feed but may slow down the HSB.

Our HSB tend to feed less on pellets when it’s hot.