Quickly shifting the transmission out of reverse and coasting in order to avoid showing up on a report is both dishonest and unsafe.
It is dishonest because it hides the true number of backs and creates an unrealistic standard for other drivers who run the route to meet.
It is unsafe because shifting out of reverse causes the back up lights to turn off. Functioning back up lights are required by law, and are necessary for safety purposes when backing in the dark as well as to allow nearby vehicles and pedestrians to see that your vehicle is moving in reverse.
Dont play stupid number games or worry about stupid reports. If you need to back, leave it in reverse and back safely.