The suggestion about the berth rental is a good one. We went there August long weekend and stayed in the town at a hotel. (We don't have camping gear, and I had free nights with my points).
That said, had to launch & Load every day from the municipal boat launch, of which, the water is extremely low. This resulted in almost needing the row a couple spots and some more skeg damage, plus added time to/from (1 hr both ways) as there is a long no wake from the launch, under the bridge, and to the lake.
Docking to a berth and just going seems like a far better idea.
Once on the water though...the fishing was fantastic. We had the best success on deep drop offs in 30-40 ft range, trolling at 2.3 km/hr with deep diving crankbaits. We found this was the best way to cover more ground to find the fish. Feel free to shoot me a message and I can show you where we had the most luck.
Had one that hit harder than I've ever felt, then broke my line..
If you do the Spruce point idea, its not too far from the narrows that will have fish 100% of the time year round.
Hope that helps!