[cardcounter0]

The most obvious would be that a 'good' player would be standing on 16 vs T about half the time, while basic strategy always says to hit.

sometimes 5,4 vs 7 double down, sometimes 6,4 vs T double down, etc.

I guess the mark of a 'good' player would be that he doesn't always play the hand the same way or according to basic strategy, sometimes it is more profitable to do something else.

Also, a 'good' player might walk away from a table even after a 'hot' streak, or actually increase his bet after getting continually beat by a 'hot' dealer, as the winning or losing of previous hands actually has little to do with the remaining composition of the shoe.