Used to have a seasonal camper on that Big Sis, still one of my favorite lakes to fish. It depends on which species you are targeting. The lake has muskie, northern, walleye small and large mouth bass, crappies and sunnies.
Stone Lake Bait and Tackle should be able to give your advice. If not maybe Hayward Bait and Tackle. Then hit the Angry Minnow (in Hayward) for a River Pig IPA.
Smallies like to summer off the big rock bar in the middle of the lake, In the summer top water (poppers) can be great for them.
Largemouth invade the shallows all over the lake. We did best on small floating crankbaits.
Crappies hang off the deep weed edges. Slip bobber and minnows work best.
The west bay has a sharp weed edge across the opening where the northerns like to hang out. Spoons, bucktails spinners with some red work best.
Didn’t do much walleye fishing so no help there.
Muskies feed along the weeds near deeper water. Lots of cabbage weeds in the lake find them you will find fish. Best bait for us were safety pin spinners like Northland Tackle Bionic bucktails. Also topwater at sunup or sundown.
Make sure you get to Pine Ridge restaurant for the fish fry.