We had many offers to tow the trailer and many offers to tow it, if we loaded it on their trailer with a crane or forklift. We were in Florida, the boat was in MD. We needed the boat down here and were unable to assist.
One shipper, Southern Ski Boat provided what we requested. They have a hauler with a winch and ball setup. The boat/trailer is attached to the ball on the trailer and hauled up. It works, we got the boat delivered, nice people to deal with, I recommend them.