Knowing your power-off descent rate will help. In my plane, I know that
my power off descent rate at best glide speed is about 50% higher than the
500 ft./min rate that I generally use in a normal pattern. If I arrive at 1,
000 ft. AGL abeam of my landing spot. I know that I'll have to make an
abbreviated pattern to make the runway. I also aim for a spot a several
hundred feet down the landing area to prevent landing short. The sight
picture through the windshield on final will tell you where you're going to
go. If you're overshooting, your landing spot will move down. If you're
coming up short, the landing spot will move up in the windshield. I try to
overshoot slightly as I turn final, then adjust the descent rate with a hard
slip to put it down at the near edge of the landing area.

John Galban=====N4BQ (PA28-180)

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