I have done it a few times, I find that if you are in the right place for walleye they come thru and then gone and I have yet to get a crappy where I get any walleye. In short long nights with one or two walleye if I am lucky. I have talked with a few anglers that have done better than that and many that have done worse. Over the years I have gotten more fish as night falls and an hour or 2 into the night, but my buddy got a nice one years ago at 1:30 am so you never can be sure.