That's an excellent thing to do but I would do power off landings in a 172
at only 30 degrees of flaps. You can get slow enough with 40 that there
isn't enough elevator authority to flare well without power. It can be done
and is probably a good thing to learn but it's dicey not banging up your
nose gear practicing it.

Moot point for me now. One way or the other, I'll probably be flying a 30
degrees max flaps version soon. I'll have to brush up the slips.

--
Roger Long

Orval Fairbairn wrote

That's cheating! Learn to make the entire approach & landing, power OFF.
The flare requires just a little more finesse.