Get a cable winch spare tire mounting assembly that was used on Nissan pickups for years. It uses the screw jack handle to operate the winch from underneath the bed. You could even fabricate a shaft with u-joints and hide the drive inside a fenderwell, if you didn't want a hole through the splash pan at the rear of the bed. There should be thousands of them in salvage yards.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!