The first answer is yes, our planes are so fast they easily stretch the ribbon the final 3'. The second answer is nearly everything I know about combat I've learned from the bunch of hoodlums I fly with. I didn't know the ribbons were supposed to be 30'. While we're at it, how long is the string supposed to be? If indeed 30' , then we're wasting lots of crepe from a 81' roll.
BTW, I've been blessed with a 4 car garage that's 2 cars wide and 2 cars deep. Plenty of room to roll out ribbons, build airplanes, store bicycles, store roofing tools and equipment (business), house a bathroom and my office, a motorcycle, etc. If I only had room to put a car in here................!