I first got to see these trailers about 16 years ago in Nevada. They are burley and well set up for what people now call "off-grid boondocking". Sheep herders call that "living high on the hog." I spoke to timberline a few years back and asked if they were amenable to minor changes in the set up, like a bigger bed. They said the lay out was pretty fixed. I'd also like to see chest fridges instead of the upright and an improved solar system. Otherwise, these things are very well set up and tough. They can be on the tall side for getting in and out of places with trees, but that will be the case with any larger trailer except for the VMI pop ups. As for the hay wagon running gear option. I dont have experience towing one, but the sheep herders still prefer that.