I love the way you guys jump at my words as if I were some infamous politician from Canberra.
When I said you are "committed to land", you decide in your own mind that (as what next said) landing is assured. As I said in my post, it is a judgement call. You cannot forcibly commit yourself to land if you are way too high/low or off track. The fact that your nose is pointing at the threshold is not a statement that you are committed to land. If that were the case, nobody would be practising go-arounds.
I was just making the point that full flap is not like "flying the figures" in IFR - it must be viewed within the greater scheme of things, such as aimpoint/aspect/airspeed etc. If you or your instructor flies each VFR circuit with exactly the same numbers, I dare say you are flying a procedure, not the aircraft.