It's been my experience, that small Perch trigger the bigger one's to bite. Because of the competitive nature and the fight for food, I have found and verified this watching Perch on my buddy's camera. The small one's are aggresively chasing food, the larger one's will simply watch. The feeding frenzie created by the dinks, triggers the large one's to bite. I like to see small one's on Simcoe, it tells me, that biggin's aren't far away.
HH