In another thread I was asking about mounting suitcase weights on the front and it was mentioned to provide some type of method to make sure they don't come off. Seems a snow pile was able to push off the front weight, not found till spring!
I had been thinking about this for the rear weights also. My luck I would survive the tractor rollover only to be pummeled by suitcase weights!
I have to mount the rear weights on the inside because my shed is short. A piece of 3" wide welded on with 5/8" bar.
The front was 2" and I used one of the bolts for the roll bar. Had to swap 2" long for 2 1/2" bolt. Don't mind the green paint on the bar, still tacky during final assembly.