Might be worth a stop. I fished Trumbull, Lost Island, and Silver (all Ruthven area) a few weekends ago. It was pretty much slow all over then but we did swing past Virgin. At that point, the water level wasn't noticeably lower. I'm heading back up that way from Ames this weekend. Hopefully there's still decent ice. The nice thing about those glacial lakes is if you go through, you're only in about 3 feet of water.