Wilk,
My experience was best with #5 shad raps and walleye divers. The walleyes can be a trick to tune when running 3-3.5 mph. Yes, that’s actually speed over ground. I know it’s ripping, but I promise it works, ask James. I didn’t have a chance to try my jointed shads last year, but I’m betting they will be an awesome bait down there given the water clarity. Favorite colors, natural shad, chartruese, blue/silver. Considering the water clarity, the more vibration the better.
For location, I start trolling the rip rap shorelines on both sides of the lake. I prefer the Wisconsin side due to lack of pressure. Right in front of the landing at Lake City can be productive at times also. As for depth, I would fish from 3 to 12 feet until I found the fish.
Watch for wing dams and I hope you have a blast!!! By the way, it feels like a mack truck hitting when you get a 16″ fish at that speed. I like a softer rod when trolling this speed also, doesn’t rip the hooks out of the fish’s mouth.