Boy, I sure have been quiet on this subject...but let me start off with a few things.
WTF shots...I have them..but now seem to avoid them...reason why, I stay away from certain areas...i/e front of trap towards right side, on BPB back 9 par 5...I've had many balls in that area shoot 25 feet right on 40 yard punch shots...thought I was crazy...thought it was just me, till playing Tess once, I mentioned and she said "that's always been a problem spot"..
SA # 5..front 9 par 5...seems like 1 out of 10 of my punch shots veer 10 yards right, from 45-47 yards out...kinda up on the hump and a bit right of center...another area I avoid if I can't get on in two.
KI has a spot (forget the distance-causee I avoid left side next to rough) that my 60 yard wedges veer off as well
There's some others, but you get my point.
These (IMO) are some programming flaws in those spots...not VEEM, not Deviation, etc.
I think of Nivlacs (or did he do it as WGTNiv?) explanation of circle of precision explains a lot to me, on approach shots, putts, etc.
I/e if your -11 through 12...(again, just my opinion) and come up 8 yards wide, short, long...it's VEM putting the ball in the furthest end of the circle of precision and instead of getting that 6 footer for bird, you now have a 24 footer to make...this usually goes on for 4 or 5 holes..be it on approach shots, or putts you should have made..i/e the putts that were dropping through the first 12 holes, now demand a tighter degree of accuracy in order to drop.
I also think VEM is tied to meter speed...I notice when I start dinging a lot..meter gets on it's high horse and speeds up at the end..when I'm aware of this happening, I let the meter run through on the first backswing (never more than once, that effing "click here" thing bugs me.
Normally the 2nd pass through, meter seems to behave as it was earlier.
Anyways, as long as I'm not playing in a beer induced coma, I remember these things, don't get frustrated, etc...and just try to combat the best as I can and relax.
I think when players are doing well and the beast starts working, they begin to get frustrated, instead of taking a step back and zeroing back in.