Here is a safety feature that you might not have thought of to include when hauling your own horse.
Here's how it works: If you have a flat on the trailer, loosen, but don't remove, the lug nuts on the flat tire. If the front tire is flat, place the Trailer-Aid behind the good tire. If the rear tire is flat, place the Trailer-Aid in front of the good tire. Carefully pull up, or back onto, the Trailer-Aid. This will lift the trailer high enough off the ground to allow you to remove the flat tire and replace it with a spare. Once the spare is on, hand tighten the lug nuts. Pull forward, or back off the Trailer-Aid, and continue to tighten the spare tire's lug nuts.
Using a traditional jack to lift your trailer is dangerous, especially if you have horses still inside the trailer. The Trailer-Aid is made of an exceptionally strong resin and will support the weight of your trailer without risk of cracking or collapsing. As an added benefit, the Trailer-Aid can also be used as a wheel chock.
Trailering Safety Tip #3: Always carry a Trailer-Aid and a properly inflated spare tire.