The boss asked me if I could build them a pallet crane. I told him I didn't want to build the forks but I might be able to make something to hang the forks we use on the backhoe. They wanted it for one job to lower 4000 lb pallets of Keystone blocks down in a hole. Well, they used it for the one job and now it sits gathering rust. Fun project though.
Looks good, keep it around, it will come in handy again sooner than you think!
I remember using one of these to unload stuff off a truck using the hiab. A fiddly job for someone who isnt an ace at the controls!