This topic has been discussed in the 20 footers thread of late.
My pot/pan drawer below the oven opened in transit and the slide latch pulled from the slides. The dealer repaired the delamination of the drawer but only increased the 1/2" screws to 3/4. Considering the thickness of the latch...not much teeth. I swapped those out for some small thru bolts.
I think it needs to be said that IMO the lateral forces for a trailer are probably different than an Interstate. Also to be fair, I think I caused mine as I caught the corner of a narrow curb/go-round down the street when leaving on the trip and that probably goosed the curb side up and pushed the contents toward the opposite side of the trailer. With a trailer this could easily happen in any ingress situation...less of a probability with an Interstate. At any rate, this will likely happen again, regardless of speed. I wasn't moving that fast.
My cause was slight curb bump, and contents momentum of contents in the drawer. Having a drawer liner to keep things in place in the drawer IMO may also help.
UKDUDE, any chance of a photo of your install?
I find this solution interesting but not sure if they'll work in my situation.
For now it's the KISS approach...twist to extend shower curtain. The end is hollow and the corner of the pull handle fits there well...actually does a pretty good job.
Like others on the 20 footers thread, I think the best solution is a $5 cabinet lock.