Depends on the model, but I doubt you'll need a snake bar, they are only for higher trailers. Just make sure your tyre pressures are right each time you go away.
------------- Corpogreen esq
dead horse
and
donkey buyer
Had a quick look at images on Google and I wouldn't say they look huge, tt's and folding campers don't generally sway as long as you keep to the speed limits - 30 on a 30, 40 on a 40, 60 on a 60 and 70 and no pulling out in to the outside lane of a motorway.