I grew up on that lake. Bass are easy. If the spot looks like bass, fish it. All those lilly pads on Lower will have bass. I used to love catching them on top water buzz baits. Throw the lure into the pads, reel it out and wait for the hit.
Upper also has similar spots.
Every weedline will have bass as well. We used to have a lot of fun on 5 inch Senko's. Cast it out, twitch it in slowly. There is a bay just northwest of Larsen's Bay where we would hammer the bass.
Jig and minnow on the weedlines always produced fish, too. Bass, crappies, hammerhandle northerns, musky...occasional walleye.
My biggest bass on the lake came when I started fishing the deeper weeds, with jig and minnow. Seemed like the littles ones liked thick cover. Bigger ones were hunting the deeper weed edge.
Crappies were a blast. And consistent. The channel between the two lakes, at dusk is a prime spot. Lower side. Crappie minnow under bobber work, but so did a 1/32 ounce jig with a twister tail. Pinkie jigs worked well, too. It was like clockwork at dusk.
Dusk was also good inbetween the islands on Upper as well as Larsen's Bay.
During the day, I'd get them on those jigs in the deeper cabbage weed. Only no bobber, just let it sink down and bounce it around those weeds.
Spring (opening week) was always great for crappie. I'd wait for a day with no wind and sun. Then I'd go into the middle of lower between the islands and the channel. Jig and twister, or pinkie jig. Drift around and find the big schools. When the wind/light was just right, you could see hundreds of crappies on the surface.
Those were some great times up there. I miss Bucky.
And if you see an albino musky, she's probably pushing 50 inches now, I named her Walter. Please give her my best! And tell her it is about time that she and I get reaquainted.