There are lots of walleye in the Lake. From South Bass Island State Park I doubt you really need to go as far as east of Kelleys Island. I'd either head N from the Park and fish the deep waters off North Bass Island's west shoal, scout and fish out there, or head around the North side of South Bass and head out NE of Middle Bass Island's long point out near the border, and scout / fish there. You are looking for clearer deeper water in the "travel lane" from the mouth of the Detroit river east to the Central Basin. These two areas are in that lane. You ought to be able to find at least decent to good numbers of walleye at these two places in August. Just because you aren't hearing reports from these areas doesn't mean there aren't walleye there. More likely that because of the distance from the mainland, few people are traveling that far. From Port Clinton east you can get to the east side of Kelleys in less time or the same. So that's were people go, because they heard the reports.