What about stabilizer legs?
I have a piece of pipe welded to the rear, inside corner of the frame which has one while across the pipe, sleeving an inner pipe that has a foot, and lots of pairs of holes through the leg, allowing a hitch pin and cotter key to lock it, at various tray heights, counterpressured by the tongue jack.
Necessary for machine feeding without the truck. Safer for heavy hand feeding.
Did you see my comment in the other thread about running your CnD at the right speed for your work, not full blast, like hydraulic chippers must?