Second hand response here since I'm now down in NC however, Dad fishes it weekly. Seems like it's been a weird year all the way around..... crankbait bite was good then dried up a bit. If I were giving it a go, I'd focus on main lake timber/brush, maybe sneak inside the mouths of larger creeks in the event some have started their fall journey. I would definitely have my riggin sticks in the boat but start single poling timber in deeper water.
Haven't seen many of the regular, dependable MTL boys on here lately but maybe they'll post for ya. South Fork Resort is under new ownership and looks like they are updating their website/blog/fishing report:
South Fork Resort | Mark Twain Lake Missouri
Might be worth calling them to see if they can provide you any direction.
U