Morning times are colder now and my 77' 550f engine takes a few more turns to start. I happen to live on a slight incline so what I have done on occasion is to roll start the motor. I roll down the hill, choke on, and in third gear I let the clutch out and away I go. Saves on battery but is it hard on the motor??? The incline has been a lifesaver to the various project cars that I have had over time...when a car wouldn't start for some reason I could always usually compression start it in this way.
Mike