Well, let me work on taking some photos of the ritual.
As for my flaps -- there may be a thread about them here somewhere, I'll have to look. But they are more or less a heavy plastic, not as thick as the walk-in cooler variety. That might be too thick. I cut rectangles from a bag that a fold up chair came in. "Bed in a bag" or comforter bags might be good as well. Just something a little on the thicker side. They are then taped neatly inside the sides of the case -- so they can be draped over the fender as the top goes in, then draped back over the top when it is closed up. Fairly unnoticeable since the flaps are clear. I know they are serving a purpose though, because they do get kind of mangled during the process. That's the friction that would otherwise be your top!
Whether my version is like Mechatronics, I can't say (patent lawyer told me not to...just kidding, I have'nt seen it).