I think I saw your (or someone's) post about this method a couple weeks ago, once I finally get the energy together to try to move the brat again i plan to give it a shot@NY_Caveman is taking to long lol.
Try this.
Piece of clean sponge with a hole cut in it.
Piece of pvc slightly larger that the nem
Place piece of sponge where the nem is the hole
Place small piece of pvc over nem, but on sponge. The sponge fills the gaps as the pipe can’t contour to the rocks.
Use zip ties or string to hold pipe to rocks/sponge.
Most nems will crawl up in a day or 2.
That has been what works best for my crazy splitting btas.