Perch are almost like grazing sheep, it wouldn't take long to wipe out whatever you put down there if they were even interested. Cost/Logistics could be a nightmare. Easier to run and gun to pattern them, surprising how some of their patterns hold up over the years. Some of mine are fairly consistent and they haven't changed much since the late 60s. Know where they are, but can I get them to bite...........? They respond fairly well to bottom noise, clicking blades, thumping bottom, etc..., they can be a curiosity seeking bunch