Need a separate opinion on this matter. This works very well when you are on a reasonably flat surface. Unfortunately there is no rubber on the bottom of the dock to increase grip. My driveway was recently sealed and has a side slope. The front of my trailer slipped on it a few times even when using this. It's especially bad when I use alignment blocks. I'll probably put butyl tape on the underside to see if that helps. That being said, this dock will work just fine for most people.
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