Ok so I have a 2018 3500 8ft dually flatbed and I’m thinking about going to a 3500 single rear wheel 8ft bed or maybe a 6/12 depending on towing capacity. I haul a 1000s Polaris RZR on my flatBed and tow a 37ft camper with 1200 lb of hitch weight. I Will buy a rack that Goes up over the cab to haul the RZR .!my question is will I get sway when towing ?With the dually set I don’t but I don’t particularly like this big truck.anyone been down this path already.! I would like this to be the last heavy duty truck I buy. Thanks for your help in advance..