1) When your yacht is equipped with an engine, the center of gravity of the whole boat will move backward. Please note that you must adjust the position of the axle at this time. If the engine is too close to the front, the trailer will have a backward drag force in the process of moving. If the engine is too close to the rear, there will be a forward force in the process of moving, Self testing can be done in a simple way: adults can lift the bar with their hands without lifting it.
2) When the trailer is parked for a long time, jack up and balance the tail of the trailer, so that even if the engine is too heavy, there will be no accident.
3) In the process of traveling, the winch of the trailer can not be used to hook the ship. The ship and the trailer need to be tied firmly with a tightening belt or rope.
