tmmorris
It is not me who gets the extra ten minutes per sector on the C152 but the club! as I charge take off to landing for all my aircraft.
It was found that the students take so long to get the aircraft into the air , (it can take up to 15 minutes) that the club was makng a loss on the fuel.
This seemed to be the best way to solve the problem without overcharging those who do longer flights.