Suggestions on strengthening jack attach point.

I had the same type of jacks,although they were not under a weak spot as shown in the original post.
Got a call Monday morning from the storage lot after some very high winds.



The jack supports as they twisted simply ripped the bolts out of the wooden frame, or in one case, ripped a huge chunk out of the frame itself. The jack on the left side, now under the camper, is badly bent. One of the three brackets was bent.