I understand the concept - after all,it's only triangles, and distance along a runway is easier to perceive while approaching than height above it.
But how does one determine the 'proper' distance prior to the aim point from which to commence the flare?
I used to have the maths describing the Jacobson flare technique but never used it in anger. Sort of read it with passing interest but don't remember / missed the point about how to find this required distance.
[This message has been edited by Tinstaafl (edited 23 December 1999).]