Basically what I was thinking… the biggest worry with falls IMO is breaking something or with cattle and sheep going caste. I don’t know if that’s a thing with horses as they are far more capable of getting up and rolling over from their sides/backs… Raymond used to really go to town rolling over both his riders and when doing the horse version of a dust bath.Two sides that allows minimal movement so the horse can lean against it and if the legs sink the horse goes straight down and doesn't tip over?