[MinnesotaDave]

How about mounting the winch at the bottom outside of the dump box and mount a rigid 4" or 6" snatch block on the top.

This is how I would do it.

 

[MinnesotaDave]

I think sweet's idea is best. I just can't figure some designs with the A frame attached to the tongue and the winch on the box which means you'd have to feed out cable at the same time the box is raising. If I'm interpreting old iron's design right you can't raise the box. Wouldn't the vertical post have to be mounted on the crossmember in order to raise the box? You could mounI something like truckers use to control air hoses and light cable to control the excess power cable for the winch while raising the box. can't believe some winch co. hasn't designed a fairlead with one roller under adjustable spring tension to keep the cable from snarling up on the drum when theres no tension on the cable.

I just figured he'd put the winch in free spool when lifting.

The product that keeps the cable from snarling without weight is called a winch wire rope tensioner.

 

[MinnesotaDave]

The more I think about what he is using it for, the more I'm convinced I'd want a gantry crane trailer set up.

Similar to how a septic tank hauling truck is made.

View attachment gantry crane trailer.PNG

View attachment septic tank hauling truck.PNG