Who wants to fish in the dark, best thing about Vermilion is the ability to catch walleyes during bankers hours. I would recommend looking into one of the private rentals on the lake (VRBO, etc.), most will have a private dock and offer more privacy.
We are coming up this weekend, fishing for the entire day on Saturday the 21st. Osakis has been on my radar as have a few of the chain lakes, however with it being so long since I have fished in the area, I just wanted to see if there were any other suggestions for a decent multi-species lake or at least one with a chance for having a respectable crappie - walleye combo.
We also have been looking into Mary, Ida, Irene and Oscar.