Counting In Tournaments
If you plan to play "open" BJ and win, then you must count (accurately). It's that simple!
Having said that, why wouldn't you count in tourneys, too? It's a/an HABIT. While I agree with others here that have said it's value is very limited in tourneys, we now see serious penetration because of no live money events. Every once in a while you'll see a great count show up and at that point the advantage should be used.
Now, if your talking last hand or two, forget the count by all means.
Billy C