If you set a timed feeder, they will find it in almost immediately. My CC found the food in a 3 acre pond within a week.

Also, If I throw more, they really pig out...not sure the 5 minute rule applies. They seem to eat as long as food exists.

I have blue cats as well...they were introduced 3 months after the 3" CC entered so I doubt many were eaten.

That's the same time I introduced 17 Florida LMB .