If I haven't shut down (pattern work etc) then I don't do any checks.
If I've shut down and left the aircraft, say for lunch or to fly something else, then I go through the whole thing except only a single pull on the prop. It only takes a few seconds.
I've never really been sure what the three pulls on the prop are for, though I do it anyway. One of my instructors tells me it's a waste of time, another goes a funny colour if I don't do it. On my own, I do it for the first flight of the day.