I repositioned the trough in the pig pasture the other day and then secured (I thought) it to the ground. I set it up away from the fence but close enough that I could use a section of PVC pipe to deliver milk from outside the fence. It worked well in the first use . . . .
Accessible from either side and accommodates the five hogs without fighting.
Unfortunately, despite driving U-bolts through the feet and into the ground, it only took a short time for the hogs to turn it upside down. On to Plan B (once I think of Plan B.)