I operate a 2001 Dodge Ram 2500 Turbo Diesel with a modified transmission (heavy Duty). Some of the things I have moved. 40X10 house boat from Yankton SD. to Fairfax SD. This was a very difficult move because the trailer was very under built. I had to install a third axel at the boat yard. I brought a 2007 Mercedes Bens up from Atlanta. The car was worth over 80K and the people who hired me to do it thought it was their child. Needless to say it needed to be perfect when delivered. I now use her for a reference. I drove to NY City and brought back to NE a 1994 Wellcraft eclipse 232 23ft 3800lbs. I moved one from Dallas TX to Chicago but that was only a 18ft Lund very light and easy to move. The thing about boats is most of the trailers have not been maintained properly. I like to remove one tire and look at the bearings. Most of the time just adding some grease will save lots of trouble on the side of the road. Also I have a jack specifically designed for low axels.