Thank you all for the replies. I plan to stay well under the Max Towing capacity, I have found a couple of hybrids that meet that criteria. My concern is the Frontal Area. "Maximum trailer frontal area 30sq feet" The expandables I am interested in fall 1000lbs below the max towing capacity the frontal area calculates out to be 84sq ft. What would be the effects of towing this with my Nissan Frontier? Does the decrease weight compensate for the increased area? How would this effect safety? Or, would it just effect how I should drive i.e. slower, mpg. etc.?