I have a 1993 Winnebago 35 ft Vectra diesel pusher with a engine retarder so supplement the braking ability. The RV has a 3500 lb trailer hitch and I plan to use a tow dolly to pull my 2015 Honda Civic. I know that the tow dolly should have brakes but I find most used tow dollies for sale do not have them. I have used a tow dolly with my Honda Odyssey to pull another car and found it very manageable without tow dolly brakes. Given my configuration, are brakes necessary on the tow dolly that I plan to use with the RV? I do understand it is desirable but 2 to 3 K for a tow dolly seems outline for what the item is.