manual could be the best solution for a non-slr (and slrs too) - because most digicams use a contrast detection method to lock on for focus in a picture - so by the time if you try to pan, the focus is already locked on to a different distance than it is 0.5 seconds later, so manual is a good way to try.
Oh yar, you are on shutter priority from either 1/8 to 1/30; haven't tried longer exposure. But i heard that longer exposure, the blurrer the background, the nicer the pan shot.
Using a low to moderate dof (f2.8/f3.5/5.6)is advisable as you will want to achieve a semi decent shutter speed to freeze your subject as it will most probably be moving quite fast. (But keep in mind you want adequate depth of field so your hyper focal distance* will definitely get your subject in focus.
*Hyperfocal distance- is the distance that will be in focus within your lense range.