Im with cubdriver on his last point. I did my commerical partly in an arrow and partly in a Cardinal RG.... The cardinal glides like a champ, but the Arrow was a brick with no power. If the comanche is like the arrow, power to idle then immediately turn toward the runway... And dont put the gear down until landing is assured. The PTS simply state syou must be in landing configuration at touchdown... nowhere does it require you to put teh gear down right away. All that drag will kill your glide ratio.