Greg- I trust your methodology better- there are no 'hidden' calcs and you are not depending on 'unseen code' for your parameters. Of course, I'm really old school and prefer it this way-so YMMV. Airfoiling and losing the lug may bring down your Cd a bit, maybe even to .65 ( I use an avg of .72 for my junk). Don't get me wrong- I luv OR and RockSim, but still like the long hand version better.
I'd like to have a smart phone, but I don't qualify.
I'm not user friendly, I have Anti-Social Security.
I don't always do things, but when I do, I think I'm busy
I'm usually left holding the bag. If I got a Right bag, maybe it would be better.
Why is it a launch lug? They are usually too small to carry your rocket to the pad with.
Why do I need an altimeter that talks back to me? I can get that at home.