I rotate the lid when the coals are all in the center and food surrounding it to help promote even cooking as the exhaust vent draws heat up and over the food. I do the same when using the snake method. If I have coals all on one side of the kettle I don't bother with rotating.
Do you flip the chicken at any point?
I do not. I just keep it simple and it cooks evenly by the convection
Rotate the lid ?
I rotate the lid when the coals are all in the center and food surrounding it to help promote even cooking as the exhaust vent draws heat up and over the food. I do the same when using the snake method. If I have coals all on one side of the kettle I don't bother with rotating.