On Tue, 30 Jul 2013 18:18:43 -0400, JustWaitAFrekinMinute
wrote:

Ok... so you have never had to do it... I get it. But trust me, it's not
a smooth line once the trailer and tow rig get too far off relative
planes...

===

Mathematically speaking, the down slope would have the effect of
increasing the turn radius so you're right about there being a
transition.