Years ago, I got into the practice of setting up the prop for hand starting my magneto engines which require the magnets to pass the coil at a good speed to generate a strong spark. I set it for the prop to be at 9 o'clock at compression and start the prop from about 12 o'clock so that when it gets to 9 it is carrying some speed. This also puts the force of the flip at compression in a vertical plane which is better carried by the landing gear, rather than a horizontal force which pushes the plane sideways. I still do that, even with my CDI engines to keep the vertical force on the gear.

Coming to gas from running glow many years, I quickly figured out that starting a mag engine from up against compression like a glow, doesn't work too well. CDI is more tolerant but still needs a good firm flip.