I took the stabliser of as that hung down a bit but leaving the rest on as its, well and truely fitted properly and havent the time to take it off as the bumper will need to be removed to get at it.
On my sport tow bar I had a plate hanging down from behind the ball, that Trugger called the "plough" so took that off in Corwen car park a bit sharpish
A couple of times the tow bar frame on the sport saved me a couple of prangs to the lower body work acting like rock sliders for your bum, so there is an upside.
Ste