I built a rectangular frame out of angle iron, 1-1/4 x 1-1/4" and laid a piece of 1/2" plywood inside that, At the front corners I had sufficient plywood cut-out that the hooks of the Harbor Freight quick-hitch fit in there. Then at the rear corners I had a loop at each corner made of 3/8" diameter rods. Attached to those loops was a light chain on each side. On each end of the chain I used those closed type latched chain connectors looking like mountain climbers use.
Then on the upper corners of the quick hitch frame I welded on loops so hooks from the chain could be attached there. Thus, the platform is supported on front by the hooks of the Quick Hitch and at the rear by the chains, adjustable. Since I had given away both of my good welders when I moved to the city, I went to Harbor Freight and bought a $100 wire feed welder. With that cheap welder I did all the work. It only welds light stuff, but it worked. These welds don't need much skill. This platform is also used for carrying wood to the cabin for heating. Is easily taken off and easily adjusted. Measurements about 3 feet wide by 3 feet to the rear. One added feature not really needed was an extra angle iron down the center in case the plywood sagged. Much lighter than fork lifts and pallets. You could add sides to the platform to keep stuff on it better.
Steel came from a local steel supply house. However some hardware stores sell it also.
In the past, I carried chain saws in a scabbards made of plywood attached to convenient parts of the tractor.
