For those of you that tend to make things more difficult than they really are....
1) Determine your speed by looking at the green speed, distance, and elevation change
2) Line your putt up using the reverse angle (cup angle).
3) Pull the pin using the icon on the upper right of the screen.
4) Read the green using a wedge. You can get a much better read on the green.
5) Set your line
6) Switch back to putter
7) Change to normal camera angle
8) Make your putt
PS.. doing #4 will clear up most of the problems you guys bring up