I look out the side window.
Much better for height reference, and I get left/right drift reference, and I don't care how far down the runway I can see, nor do I care if the runway is sloped, or made of dirt or asphalt or grass.
(not actually the 'side' window, but about 45 degrees between ahead and the side)
Old instructor taught me that, much better for the flare, any size aircraft, critical in a tailwheel.