Today tried out the "system." It's not done. Have to mount the winch and toolbox. The jack is too "horizontal" to get any leverage when bed is down. I'll probably lower the front pivot point a few inches. "No fun."
Still need to rewire it
Here is the "worst case" situation, IE loading / unloading with no ramps. I "felt" the tractor on / off to the balance point, then jacked or released from there. You can see the front trailer tires are a bit off the ground. I'll have the winch when / if I get it remounted, for today I ran it up there "on the starter."