On a 48 we did we used a Ranger wind up spare holder. You don't even have to get on your knees to use it, just lay the tire on the ground under the back bumper, drop lift bar through enter hole in wheel, crank clockwise and the chain (or cable) will pull the spare in under the truck and hoist it up into place. To remove unwind till there is slack, ease truck ahead a couple feet, remove lift bar and the wheel is ready to be picked up. Not even any dirt on clean clothes if you handle the tire and spare carefully. The lift mechanism is very compact.
