Grass vs pavement makes a HUGE difference here. How many of the guys who never use the up elevator are flying from grass that isn't putting-green smooth?

On our field, there are some small bumps, and the mowing company sometimes misses days. So you have to hold a little up elevator at the very start of the roll with just about anything with wheels smaller than 4" or so, or you'll just nose-over. Once the plane gets moving (and it doesn't have to be moving much, just enough to handle the grass and bumps), you can let go of the elevator and go from there.

On pavement, you don't have this kind of problem.