[QUOTE=stb;8609440]
I just traded in my 7’ high trailer for one that it 7’6". My biggest horse is 15.3 and I thought he was going to brain himself on that 7’ trailer. I wouldn’t have another one that low.[/QUOTE]
Good grief, he must be a slow learner! Do you put a head bumper on him?
As I said before, we have large horses, they do fine in the 7ft height, though I have always hauled with head bumpers, started that way as a kid. Mine are 17H, the largest is probably 1600#, just big bodied, but not Draft horse sized. Not built like Fresians, with the high set necks to make them up-headed naturally. They quit raising heads when the big ears touch the roof. They get a lot of travel miles, 7ft high is fine with them, comfortable inside the trailer, come off moving smooth.
Our stock trailer is old, was supposed to be “Draft Size” when we got it back then, so we figured any of our big horses would not be THAT big and could manage fine inside that height and width. I didn’t want the wheel wells inside the walls for horses to trip over or have to stand oddly beside them. Horses have straight stalls, with removable dividers to allow full use of all the inside space of the 4-Horse trailer.
Going higher with a trailer can affect the mileage more, should that be a factor in your hauling considerations. Flat front on bumper pull also is a factor in mileage if truck has no cap to make smoother flow of air over the trailer. Gooseneck trailers do give a lot more to you in easy turning, backing, a better ride for the horse between the axles. Also points for the OP to consider. Steel over aluminum if you live where they salt the roads. Easier to repair steel if needed, cheaper to buy. Aluminum can be expensive, corrodes with salt, also gets brittle to fracture, as seen on semi trucks. All part of the choices OP has with trailer owning!