Holy Crapeezee Andy. I know you mentioned this caver trip at MAB, but I had no idea! Is that a waterfall that you slide down like Harrison Ford?
Looks like you need (4) P-200's, Ariane Rocket style, to levitate your butt back up, or do you have Johnnie just tie the rope to the dually F-250, put it in "Go Forward Fast" and yank you out like a Minuteman III missle.
Have a safe adventure.
Tom