Trailer "shimmy" in campgrounds

RinconVTR wrote:
I have a 25ft trailer and tried a number of different jacks made by Bal and also their X-chocks. The X-chocks help, but their other product..."locking arms" eliminate the issue entirely. Depending on the orientation of your front and rear jacks, you could need as few as two arms (one set), one set per end, or 1 set per corner.

Reading about your set up, you could likely require 1 set (2 locking arms) at each corner. They are around $80 per set. But if you really want to stop the shimmy, these will do it 100%.

http://norcoind.com/bal/products/consumer/stabilizing_products/lockarm.shtml

Here's what mine look like;

Since you have basically done nothing to neutralize or eliminate either the suspension "bounce/movement" nor have reduced the frame span length I wouldn't consider shoring up only the far corner supports of a trailer a good solution. I'm surprised at your statement about it taking care of 100% of the issue since many other posts indicate a different experience and only the addition of some extra supports near the axles has the situation been improved to where it becomes satisfactory.

Now it's only my opinion, but spending $80 or more to only shore up the corner supports on a trailer is not very cost effective nor IMO a good solution for this "shimmy" issue especially with longer (over 28' or so) trailers. You might have gotten for your liking decent results, but I contend that is only because your trailer is so much shorter than a lot here and where this issue really becomes noticeable. One needs to both reduce the unsupported (or better stated properly supported) frame span lengths and to reduce or eliminate the tire/suspension bounce and that can only be accomplished by adding supports and getting some much closer to the axles.

In any event what you have shown I don't think would work much at all to help something like the 40' unit that the OP is trying to stabilize ... that's just too long.

Larry