Possible Hay Trough Set Up
Place against wall. Position so they can’t get butts over the trough. Head only? Make elevated ramp leading up to tough…similar to water? Encourage goats to pull feed up rather than dragging it out?
Various Hay Feeders for Goats
https://www.outdoorhappens.com/homemade-diy-hay-feeder-for-goats-designs/