For anyone who is interested-- I was talking to my brother today and he said the walleyes are really snappin on Bitter lake right now.
He was fishing on the West side of the lake toward the middle in 22-24 ft of water-- in the evening. He caught 10 last night with 2 good sized ones back to back... one 26 inches and one 27 inches. They don't recommend eating them that size out of Bitter, but they are still awful fun to catch.