I keep stats through an iPhone App called Golf Pro. It's about 12-15$ and it keeps:
club used
distance
chips
putts
distance to hole on the green
penaties
sand shots
Fairways hit R, L, C, or missed
From this input it calcs the up/downs, bounce back, sand saves and then shows all the stats for the round; number of putts, avg distance on par 3,4,5's, etc
It sounds like a lot of input but it doesn't take but the amount of time it takes to walk off the green after you putt.
The stats don't lie and it will humble you!
Jim