As a statistician I keep track of what I and my playing companions do on a course. The most important stat (outside of putting) is, I think, the FIR. How many hackers can wrestle balls out of roughs consistently without cheating? Then, if over a thousand rounds of golf, with considerable data collection, tell us anything, the number a hacker should shoot for is GIR + 1. That is, a hacker should attempt to avoid bunkers and such even he/she clubs down considerably. Drives are nightmares, but hitting a soft cut helps the FIR number.
Then, not too surprisingly, is the lag putt. Some of my friends charge the hole relentlessly but as Snead said--a golf hole has four doors, when you hit a putt to just get to the hole, you can use all four doors . . . which worked for him until the yips took over. Marking where my companions put their lags, it is clear that they rarely actually drop a long putt--although many of their efforts are heroic--and they leave themselves with a lot of 6-12 footers.
Finally, I agree with John Daly--although I do not have the stats to prove it--practice 3-4 footers relentlessly.