Which way should you face your decoys,facing the current or away from the current?

If ducks are trying to stay in the same place in current they will allways be facing up river ( because they have to swim against the current to keep themselves there). So if you have your decoys in the current, you will want them facing up stream, but if you have some areas where the current is not very strong, mixing it up will add to the realism.

What he said is correct. That's how I do it.