Only thing about 2 wheel trailers.
is they tow centered where they are attached to the Bike.
So will be to the left of the center line of the Bike.
what's the benefit of the single wheeled trailers compared to a two wheeled trailer?
they tow on the same centerline as the bike ,
so off road single track BikePacking it's an advantage.
but are requiring Low centered packing and tight load.
Xtrawheel is now Pannier carrying, not, so Utility friendly..