When we bought our used C, it has the skid casters bolted to the hitch. They hung down several inches, and one was already bent to the point about half of the ball bearings were missing. One of my first tasks was to remove them..
I subsequently added air bags which helped a lot, but I still had occasions where we dragged the bottom of the hitch, so I bought a bracket and steel roller that used the hitch pin to hold it in place:
Problem is, in softer materials, it acts like an anchor - I know, I buried it twice. And it still hangs down.
We don't tow, so I came up with this nifty idea:
I made mine; here's the rest of the story from a previous post:
Tail Dragger Roller Project