Constant aim point..throttles for speed..Flare when aim point is out of view..new aim point horizzon..result = aeroplane lands itself
When I've had the instructors hat on, that's exactly the way I've taught students to land the aeroplane. A couple of things though.
The new aim point isn't the horizon, it's the end of the runway. You don't have a horizon as such anymore, so that's the reference point (end of the runway) as you holding off/flaring the aircraft.
And all this bullsh!t about looking at the far end of the runway?
Where else are you going to look? You're not going to be looking at the top of the cowl which might be around six feet in front of you and you're certainly not going to be looking out of the side window.
If you fly a constant attitude apprach with the aim point sitting nicely in the windscreen (in the same spot hopefully), you can't arrive at anything else but the aim point at roundout height.
Once the aim point dissapears under the nose, the aircraft is rounded out to someting like the S & L attitude and you are now looking down at the end of the runway.
And what are we all looking for?
ATTITUDE. The aircraft lands in a certain attitude. Just like it climbs in a certain attitude, flys S & L in a certain attitude, it lands in a particular attitude.
Getting that bit right is the key to any successful landing. You get the attitude right and everything else falls into place.