Back in '91, I thought I wanted to be in the cypress and specialty sawmill business. I had a 1976 F600 that had a swinging jib made from half of a truck rear axle mounted vertically behind the cab with a short pipe attached to the hub for a boom. The winch was just a drum on a shaft mounted on 2 bearings on the truck frame. There was a sprocket on this shaft and a chain went to a shaft that was directly connected to a PTO. you put the PTO in gear, and your foot off the clutch was cable in, mash the clutch, the cable freespooled. There was no brake or hold on this winch.
This was obsolete before I got it, but it was the way a lot of wood was hauled for 30 yrs here. With some practice 2 men could load 10 tons of wood in 15 minutes.
On most crews, the only communication between the tong setter and operator was a shouted "H'YUP!!!".
If the clutch was down, it meant get off it. If the clutch was up, it meant mash it.