The only time our CC are hook shy is when they aren't hungry from gorging themselves on fish pellets.
They refuse fresh shrimp, nightcrawlers, blood/stink bait - you name it.
But turn off the feeders for a few days and you can slaughter them on anything that looks like a pellet.
We are in the process of ridding them from the pond if possible - we overstocked and they have become pests at 6 to 8 pounds.
They don't become hook shy when they are hungry, based on my experience
George Glazener