If you have a smaller utility tractor/UTV, you can leverage auxiliary loading equipment, such as cranes and forklifts to load the cargo. However, it’s critical to ensure that the crane’s chain-and-hook assemblies match the load’s weight to prevent unexpected falls that could damage the cargo.
For a relatively larger farm tractor, use chains, and a manual/automatic come-along tool.
Tie two chains, each on either side of the front axle outside the radius arm. Connect the chains in front of the tractor to form a single line running down the middle of the trailer and attach it to a come-along. The point where the two chains connect should be at a safe distance from the tractor to avoid scraping the hood sides.
Using the came-along, pull the tractor up the ramps onto the trailer, and position it in a manner that distributes its weight evenly to each axle. Having a driver control the tractor’s direction helps and saves you the hassle of coming down and checking the load’s orientation after every two/three pulls.