O.k., I understand that you want to monitor the highs and lows of your faithful CC members - a point of view to discuss.
OTOH I learned that WGT left some USGA-like calculation method because it was subject to abuse by sandbaggers - post max 20 bad rounds and your chances to win will rise...
I for one are quite content with the "average of best rounds", marking one difference between this game and real golf.