Jock, I also video the landings and de-brief on a TV or Lap Top screen to better allow the student to learn how the picture should look and where to look and what to look for.
When there was a problem with a given approach and landing all I need do is freeze the video and ask the student to use the laser pointer I give them to put the red dot on the area they were looking at at that time...then if they were looking in the wrong place I show them where they should be looking by placing the dot in the correct place in the picture.
The students always remember where they were looking for the simple reason they were there only a short time before.
That method of de-briefing is very effective.
By the way I also charge a rate that allows me to justify teaching, and only charge for flight time the pre briefing and post briefings are treated as quality time sharing.
