Don, Erie PA holds a lot of resident fish of good size. We get the western basin migration in late july & august which are mostly smaller in size like your thinking at 20" The fish in the pic was long but we didn't measure it. It weighed just over 9lbs on my boga scale. Usually we catch bonus walleye in april but this year my first came in may probably because of the colder water temps. My pb walleye weighed just over 12lbs.