Auto-ranch? Use plort collecters, farms, and drones.
I use 2 drones on my ranch. One is picking up plorts and putting them in the plort market. The other is also picking up plorts, but drops them in my Refinery Link.
Advanced drones, plort collectors and hydro cannons(if you are at risk of tarr). It won’t be fully auto though. You will still have to make sure the drones have water.
What do you think?