I found this manual: http://honda.ca/Content/ownermanuals/eBizPublication/A/OwnersManual/2015/06/18/7c8c9d560b60e410VgnVCM1000009ba782cf____EN.pdf
on the Honda Canada website. Page 318 has a section called:
When Your Vehicle is Towed Behind a Motorhome
Manual is OK according to this, but this is a Honda Canada Manual, so foreign buyers beware of warranty limitations.