Wally,
Not certain if that question was directed towards me, or the originator of the thread.
I have a 1994 Fleetwood 23' Class C on an E350 Chassis. I settled on a 16' 2004 Interstate West TA enclosed trailer.
Since you appear to be a dealer of this item, perhaps you are familiar enough with its' operation to answer a question.
What happens when, through suspension travel limitations (bump and droop) of the trailer, motorhome and "tufftow", you cannot have all axles in contact with the road? Such as travelling over a driveway with a steep downward approach angle into an immediate steep upwards slope?
Will the tufftow fail? Or will the tuff tow bottom out and proceed to attempt to lift the rear axle of the motorhome off the ground from a point (hitch ball) 10 feet to the rear of the axle centerline? I can't see either being a good scenario, so what would occur that I am not 'seeing'?