Let me give you an off-the-wall, "think outside the box" suggestion to mull over.
Believe it or not, some individuals unpin the hitch from the bed of the truck leaving it connected to the trailer's kingpin, lift the hitch out of its mounts with the front jacks (landing gear) on the 5th wheel, drive the truck out from under it and leave it hanging on the kingpin of the 5th wheel. When rehitching, back under the hitch and drop it in the bed by lowering the front jacks of the 5th wheel.
Several individuals report doing this routinely. In effect, the kingpin and front jacks of the 5th wheel become your hitch hoist.
Just another option to consider.....