I made one somewhat similar to the ez gate. I bought all the parts at Home Depot for $30, including the garage door spring. Some eye bolts, a piece of 2&quot; PVC, come cable, and a couple of small pullyes. <p>I made a bracket to hold the pulleys. I welded two pieses of stee; to a flat piece that bolts to the trailer. you could do it with out welding, as long as you can get a little creative with the pulley setup. <p>Took about 2 hours to design and build. Works pretty good, but I may make a few adjustments to the tension, after I start using it more often.