There are small trailers that you could pull with the Frontier, but none that would be well-insulated enough to get through the winter up there. A guy asked the same question in
this thread. Arctic Fox are known as the best insualted trailers for year-round camping, but they are heavy, even the mallest model is out of range of the Frontier, and all the but the smallest you really need a 3/4 ton truck.
Diesels can be expensive, don't rule out the Ford V-10 or GM 6.0 or 8.1L gas engines either.The new Ram 6.4L is strong too but has only been out for a couple years.
