Interested:
"With regards the idea of no turn on 1. How do you square that with Guy Howard which states "start to turn on 1" then "turn 1/4 between 1 and 2" this being defined as turn in the feet."
While the actual turn is measured in the feet, "start to turn" or its Alex Moore equivelent "commence to turn" is actually a redundant mention of the body action called CBM. It is not an actual turn of the feet, but a prelude to the turn of them. If you look at the given alignments, I believe you will see that no actual turn of the feet is documented in the placement of step 1, but only in the eventual departure from it.
Clive:
"Surely, where you place a foot "pointing", it isn't going to move again, and the body having previously "turned less" has to catch up."
I would not necessarily agree with this. The foot will not necessarily point in the ultimate alignment, but may simply tend towards the ultimate alignment with the difference made up later.
There's some tendency to demo pointing alignments by placing the moving foot extended in the new alignment while the body remains stationary over the standing foot, but they are not actually danced that way. Instead, the moving foot fully achieves its extension and pointing alignment only as the body is in flight away from the standing foot towards the moving one - its really a continuous process, not the hold-point-move one that is often used to introduce the concept.
Interested:
"my point was that the heel turn in the ft reverse turn is different from the corresponding steps on say 2 and 3 of a rev turn in waltz in the sense that there is no body turns less on 2 or body completes turn on three."
I would not actually say that it is different in execution. The documented completion of the body turn for waltz tends to be reserved in execution until the CBM (if any) of the next figure. And the same is done in foxtrot - just as in waltz, we achieve the end alignment in the feet, but hold an underturned alignment of the body which is not lost until the next CBM action.