You got to think like Red Green or "how would Red Green do this?" All you need is some inverted spray paint and of course duct tape.
What you do is go to your favorite parking lot and duct tape on for the outside radius of your fifth wheel rear bumper a orange inverted spray can and that would show your tail swing. On the inside radius of your circle tape a inverted yellow on the front corner of your fifth wheel and then a inverted red on your front bumper of your truck on the inside radius also. Use a little duct tape to hold the spray paint open and start driving circles.
Disclaimer: This was a joke for those that don't know better.
Seriously either a scale model with all the measurements including wheelbase, overhangs on truck and trailer, etc. or go to a parking lot with some orange cones to drive thru. And bring a 100' tape with you
Dan
