I like everything about that setup, except the ramp. Man, that's a narrow ramp. Dont miss on the pole shot... You also have nothing to stand on, should you have to stop on the ramp, for whatever reason.
Also, does your M109 get "stuck" when going over the ramp "lip" (the hinge point), at the top?
I would not do the "trailer on a tongue" idea for our cycle. The flexing and twisting moments of inertial would be pretty extreme at the mass we're talking about. "Normal" hookups have a ball joint to avoid generating these type of moments. You make a solid mount onto the hitch where the ball is normall mounted, and you're really asking for trouble when loading it. The hitch manufacturer's dont rate for flexing and twisting moments, they rate for steady state forces.
Now, if you could somehow brace both of the "arms" of the trailer with cross members, to the sides of the truck somehow, That would improve both flexing and twisting absorption. Place the ramp, mount the cycle, remove the ramp, and place the braces on each side. That would prolly work.
Bob
2012 Blue ZX-14R, Cox rad guard, Skene Design P3 Lighting, Knight Design 1" lowering pegs, Grip Puppies, BrakeAway, Cortech Sport tailbag, GSG MotoTech Frame sliders, Stebel Compact horn.