Rob, for some gawd-awful reason, they are specifying reedies. A Norvel .061 would do about twice as good! But (you knew there would be one) a friend built one and it wasn't a great flier. I didn't get close enough to determine the problem. That thing was so ugly it probably committed suicide! Other people have reported great success with it. I've seen a thread in the past where a guy taught himself to fly with one.