The main objective of any perch rig is to be able to feel the bite, especially when it's real light. Rigs with heavier weights make it more difficult. Rigs with a lot of distance from the main line to the hook also make it difficult - the perch has nabbed the minnow before you can tighten the line enough to feel it. I think learning the "feel" for whatever rig you are using is more important than the rig itself. I was once challenged to use a different rig because I was catching and my buddy wasn't. I told him the feel is more important than the rig. So he said "ok, try mine." I was using a traditional spreader and he was using a crappie rig. After about 25 minutes of getting used to the crappie rig, it's feel, I started catching perch again, almost as well as with the spreader. He didn't do any better with the spreader. So once you decide on a rig and it works for you stick with it.