I was struggling with this as well.
I fabbed a ramp coming off the side of the vehicle with 3x 10ft 2x4s from Home Depot. Cake walk. 2x long rails and the 3rd to make cross braces. Hardest part was locking to ramp into the vehicle; I did this by attaching plywood strips to the top of the...
This thread deserves some more visibility, great quality design and build Sonk76!
Any chance you have the Sketchup files still laying around and willing to share? Will save me oodles of CAD time.