There's a guy who posted something on here a while ago who towed a pop-up camper that either is right at or exceeds the 1500 lb. "limit" and said he had no problems at all. Here's his picture site: http://photos.yahoo.com/[email protected]
I have a trailer that has a 2000 lb. capacity but I know I'll never reach that but I kept it because it gives me more flexibility.