I have the flat bar hidden hitch. You unbolt the round frame spacer bar on the back of the Tracker, and replace it with the hitch using the same bolts that held the round bar on.
In the US, the Tracker is only rated to tow 1000 lbs, according to the owner's manual. I don't know where they get them, but I have seen Trackers with 2 inch receivers on them , and I wonder what they tow. I pull a small camper with my Tracker that probably weighs about 1100 lbs fully loaded. It does fine on the flat, but struggles on the hills. I don't think I'd want to pull anything much heavier any great distance.
I have used it to move a 2000 lb trailer around the yard, but I won't go out on the road with it.