After 12 walleyes today, we looked for perch out of the Catt, and didn't find any....... perhaps I was looking too shallow, as we didn't venture deeper than 59 fow. for kicks, I dropped the probe and found 63 F water on the bottom in 59. There was a 6 degree break down 50, and fish were piled up on that break........ sheepies...... lots of them but not a single perch.