Does your occupation require handling those heavy lifting jobs, especially when there is no-one around to help, or maybe the load is just too HEAVY ?
The Lindsell Hoist, an Australian designed and manufactured hydraulic crane.
This crane bolts in the corner of either your steel or aluminum tray and is powered by an electric/hydraulic power pack which uses the vehicles battery.
There are various models available to suit a variety of lifting applications, e.g. generators, compressors, welders, 205 litre drums and many others.