I don't think there are any current stats that use the hole cards. But I've always wondered if some new stats that use the hole cards could be useful. One could be average
Hand Score when betting flop, turn, or river. A lower than normal avg Hand Score would indicate they bluff more than average.
I'm not sure how long it would take for these stats to converge (1000 hands?). And they are also skewed since its automatically filtered just by hands that get shown down, does this affect it too much?