Predicting October is tough, it depends on the weather and water temps. The bulk of Beaver stripers spend the summer months within a few miles of the dam. After turnover (typically October), schools will congregate at/near the mouths of the major creek arms* all over the lake, but there's quite a bit of open water roaming while they get there. That pattern will hold till water temps reach the mid-low 50s, when they'll make morning/evening runs to the backs of those same creek arms.
Everything Quill mentioned above is good advice. Find the large schools of shad on your graph and you'll be in the zone. If I had to start raw in October, I'd start trolling large circles just outside a creek arm mouth, working toward, and eventually inside the arm. If you find nothing, move to the next creek and do it again.
*by major creek arms, I mean any cove/arm that's at least a half-mile long, regardless of whether there's active creek inflow or not.