Do not bother with spray. Spray is usually one of the last to get iced up because of the nasty winds that whip through there every afternoon. And breaks up any forming ice. Water temps have to drop a bit more and then you need a couple stupid cold nights with no wind to get it formed. Once the ice holds for a couple days and that first inch is established, ice grows rapidly. But I wouldn't expect ice up there for a few weeks yet
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