I guess the name tells you most of what you need to know, but here goes anyway..
Short putts (<3 foot-ish) - heavy on pace, and miss the ding on the appropriate side. Have to confess that the main reason I started doing this was time-saving and laziness, but I've stuck with it and it seems to work, especially compared to trying to read the curl and get it dead-weight)
Medium and upwards - always reverse view, try to read the gradient, move the arrow, and go for the ding.
Be interesting to know what the big boys do.