A single vertical tail, instead of the twin angled tails in the V-280. I wonder how that I'd supposed to fold up on the vessel?
In the bottom left corner of the image.
Both ends of the top of the "T" fold down, then the base of the "T" which then has an "I" profile, folds against the fuselage.
Not sure if it would work, and it's just fan made and not official anyway.