MustangGuy, I have a manual crank model, TrailerValet XL originally for a 23í Flying Cloud. It came with a coupling that attached to the tongue jack to stabilize it (last photo).
We have a concrete driveway and pad to the side of our garage so I needed something to navigate the trailer in tight 10í space.
We now have a 27í Globetrotter which has a third more tongue weigh. I found TrailerValet makes a frame attachment mount with a post that is more stable but does limit the turning ability. Iím able to work around that because Iím making slight turns and mostly moving back and forth.
Itís a good workout but gets the job done for me. Your mileage may vary!
Good luck from across the pond.
2019 27í Globetrotter FBT Walnut/Dublin Slate
2019 Ram 2500 6.4 Hemi Laramie Blue Ox 1000#