[MetroMPG]

Fun.

I like how you've made a short tongue - the smaller the car/trailer gap, the better (if you can handle the reversing).

Side view, I think if you imagine the "implied" curve of the roof line extending behind the car and you were on that line, you'd be pretty good.

I'm sure someone will be along shortly with a "template" illustration.

Is the big spoiler part of the plan?