No, the long boxy square on the skoolie does not. Shows only that an extension length is possible with an exceptable departure angle. I have no plan to go that long.
The geometry of the square to round transition is neat
. molding in the curves of Moby's corners, and the Template's<22* top & sides & ~10* bottom will be a challenging fine tune. very 3D shaping.
an answer to your earlier question:"Are you thinking of something like a tail box with a drop leaf?" Yes...lets say 1st half of the square to round transition be ridged/attached to the rear of Moby. A later 2nd half could be a drop(or uplifted) leaf.