I noticed making noise to attract perch has been mentioned a couple times in this thread. My dad and I use to fish with a guy 30 years ago that had a homemade "fish call" he used perch fishing. It was 3 of the old metal window weights (the ones that were hidden in the wall on the sides of the windows) tied on a long rope. He would lower it off the back of the boat and tap it on the bottom every so often. I swear the perch use to start hitting within a few seconds - of course I was 10 years old at the time and I may have just wished it was working. He would also start and rev his motor occasionally to make a little noise.

Anybody ever hear of anyone doing this sort of thing......because I happen to have a few window weights in my barn as was thinking about trying something similar but don't want everyone on the boat laughing at me.