I'd say as long as you don't go overboard with tongue weight and overall GCVWR you will be okay. I tow a single Polaris 870 Touring in a single axle trailer with an 18 inch hitch extension and it actually drives smoother than alone, especially in high winds. My 840 weighs in at around 3200 lbs with a typical option package and two batteries. Empty tanks make for an easier trip but a full water tank is still doable. The 840 is a great camper. The weakest link in the weight ratings is wheels, not tires. Mine are about 3500 lbs apiece for a rear max of 7000, so having a long bed helps distribute the weight better, but I would not be surprised if the short bed handled well also. I employ Torklift suspension aids for a better handling load, no need for airbags.
