Does X chocks help stablity?

I have the pair of these. They take a lot of shake out of the trailer when locked in. I have heard (read) a couple people say that they don't stop the trailer from pulling away. I have never tugged on the trailer with them installed, but I can't imagine it moving anywhere. I guess if you really pulled it, they would let loose, but I would think it would take quite a tug. They really stabilize the trailer while set up.

BTW, If you get really interested, you can beat that price at PPL.

I agree too. Doesn't remove all movement, but a great deal of it. Terry has posted a couple of times about his trailer rolling, but i just can't see it. Mine sure seem too tight for that to happen. Not calling you out, Terry, just don't see how it would happen, based on what I've seen. :)

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But they won't stop it from rolling away. Just 2 weeks ago I forgot to remove mine from one side, As I eased off the levelers. The Loc, and chock. Provided no resistance. And popped right out, and under the tire. Un like the big orange chock on the other side, which stopped me cold. Not sure using the loc, and chock is worth the trouble.

Agreed. I use these:

http://www.campingworld.com/shopping/item/wheel-stop-chock/29163

The definitely help with stability.

I use a set.Unbelievable stability. I have a narrow set,but if your tires are farther apart you will need the set that you are showing.
They take a lot of the movement out of the trailer.