Can see the benefit for flat land use: https://www.youtube.com/watch?v=GIe0q5EL_V4
But can't see a link from Rubery Owen website to relevant info??
Always used to think a PTO powered trailer would be a good idea, and maybe it is on flat boggy ground, but can also see that it would be pretty dangerous tight, twisty inclines. (IMO).
Remember a video of 4 hard-linked 4x4s powering through bog but no idea where to find that now. That was impressive.