Most ballheads come with a notch cut out of the side of their base, so you can fully tilt your camera on its side for things like vertical panos (well, not just for those, but it sure comes in handy). This is just a quick tip that will help you make shooting vertically more comfortable, and that is to rotate the base of your ballhead so the notch is always on the left side from your shooting position. That way, when you use the notch to shoot vertically, your shutter button is near the top of your camera and easy to reach. If the notch is on the right side, your shutter button winds up near the bottom of the camera and getting to it is more of a pain when it’s on that side.