I know someone that traveled over 400 miles with their boat full of ballast and didn't realize it until they got to their destination (Thats a lot of weight in a Malibu Wakesetter). The trailer was older and was serviced regularly. The trip went fine except the brakes were trashed on the truck and trailer. Trailers could fall apart at any moment whether they are overloaded or not. I believe it is in good shape mechanically, it will hold the load. If you plan on traveling through rough terrain or long trips every time you travel to the water then it is probably not a smart choice but do I think it would handle the weight. It might just mean that you service it a little more frequently. I don't think 500-800 pounds over will matter traveling down the highway.