Here's something to visualize when you talk about hitches being able to "center" the trailer.
Picture the TV and TT on glare ice. Presume you have traction push on the trailer sideways at the far back end,(like the wind would) it's not difficult to sway the trailer sideways, now go to front and push on the A frame about 30" back from the hitch which is roughly where these "centering" hitches would act. It would take a huge amount of force with such little leverage to push the trailer back in line. Just my food for thought today
