One thing that I have never seen done, but, would be perfect,,
Change the drawbar hitch to a piece of 3X12 (or similar) steel bar, as long as there is room for.
Under the tractor, the weight would be out of the way.
And, with the weight down low, the center of gravity is lowered, making the tractor safer on a grade.
My BIL had a 55 gallon drum on the three point of his loader tractor.
It was filled with old steel and concrete.
If the three point was raised too much, the center of gravity was raised,,
the tractor actually felt MORE TIPPY with that ballast all the way up.