How do I get skateboarding photos to turn out like this?

watch the people practicing a few times, watch where they start off, do the trick, and then land it.. focus it on the area where theyre in the air doing whatever it is they are...lets say a kickflip; try timing where they get the board to flip and when, focus your camera on that spot and when they get there BOOM !! you have an awesome picture...dont expect it the first time though hah.