I love fog. Here's something I like to use.
donlarry wrote:fighting blind what should i do
Flip it. If you don't know where they are, you can do the same to them. Get a nice stack somewhere against a wall that's close to their general area, and surround it with ones. Once they come tearing through, they stumble on your stack but don't have enough to take it out. After that, you can follow the trail into their territory. Usually works best when you have some cards saved up, because even if they deplete that stack, you can blitz them with a large reinforcement they might not have expected.
-TG