Even though I've had access at this point only to pictures of the bike to feed my concerns (
), I know that you are correct with respect to component locations on the bike when folded; my concern about protecting the disk was informed by my greater concern about protecting the derailleur (
). I think that the vertical positioning is best and will use that if I can figure out a reliable way of stabilizing the bike, perhaps using the "Jonesandrew" approach.
It's interesting that someone else suggested that I simply toss the folded bike flat onto my car's rear deck as he has done and not worry about "twerking" the disk. I'm too obsessive for that!
Again, Thank you!