I was hoping that someone would have replied to your post. I am also considering the purchase of a motorcycle type pull behind trailer, weighs about 300 lbs empty, to pull behind my rialta. As I understand the gross vehicle weight that the Rialta can haul is only 1000 lbs. This weight includes the weight of the passengers and the stuff they carry. Assuming that two people weight about 350 lbs, the trailer weighs 300 lbs, that leaves only about 350 lbs of cargo to carry in both the RV and the trailer.
However, I do not have personal experience with this, and would also like to hear from others who have tried it. Gus