So this is why I ultimately had to get rid of my Wildernest, I am assuming that they are similar in weight. The solution that I came up with but never executed is as follows;
1. Unclamp / bolt the FlipPac
2. Lift the front and slide a board between the truck and the FlipPac, a 2x4 wont be enough, maybe a 4x4. Cut it to length so that 12-18" extend past the side of the bed rails.
3. Repeat at the rear of the truck.
4. Build 4 sets of legs with some sort of jacking device. I planned to weld some trailer lift jacks on top of some 3 inch pipe with a 12x12" base.
5. Put the legs under the boards, jack up each corner, drive the truck out.
Just do the reverse to put it back on.
I also consider using scaffolding jacks, they come in a lot of sizes and are already assembled. I called a few rental places and they were willing to sell me some older used ones. The camper is well under the weight restrictions, I wasn't concerned using something used. If this doesn't make sense, I can draw a picture.