Upload & Sell: On
I start at the top left of the frame, usually at 200 percent, use Page Down to scroll down one screen sized frame until I get to the bottom, then Cmd-Page Down to move one segment over and page up until I get to the top of the frame, and so on until I'm at the lower right. Then go over at 100 percent as you often miss things at 200 percent that you see at 100 percent.
Personally I love flick panning, and if you use the Spacebar to enable the Hand Tool, you flick toward where you want to be and it stops cold as soon as you let up on the Spacebar. Flick panning is one of the very few newer features I actually like, but since it's obviously not for everyone, it's easy enough to turn off.