"Culled 10 perch to eat, of those 10, about half had fish food in their bellies. about 3-4 days before I fished it I threw some floating feed out because it had warmed up to air temps of 50s. I didn't observe any surface feeding at the time, but I guess they found it!"
Nice report!!
I wonder if that's normal for the fish to still have the feed in their bodies after 3-4 days, or maybe is that a result of reduced metabolism due to colder water temps?