1) The Catalina 25 has a boom that extends significantly aft of the clew of the mains'l in order to accommodate its end boom mainsheet. This mainsail cover is designed to cover the mainsail, not the complete boom. The length from the center of the front of the mast to the end of the cover is approximately 12'.

2) See part E1698 below, in "may we also suggest", if you would like the option of ordering a longer cover, or to have a cover made from a different color material.