Originally Posted by dangerdave
I had the same thought about lateral force. If one of those gave way and the trailer came down you'd have a lot of damage.
We have had our TT knocked of the front support blocks when someone in the storage yard backed into it. The post of the jack was driven straight into the ground. There was no damage at all, but I needed to jack the trailer up, fill the hole and re-block it. I used the F-150's jack to lift it.
Our 25Z has 700# of tongue weight. Maybe the stabilizers would hold 350# each, but I never intend to find out.