This hayrack looks more suitable for horses.
Goats are wasteful with hay so a rack with smaller gaps means they have to pull it out by the mouthful rather than have a hunk pull away which they will drop and not pick up. Look at Ascott Smallholding (can't remember their website but Google will know) they have sheep/goat racks with better gauge gaps.
I use their twin rack over hurdles between my goat pens for hay access from both sides, and also for cut nettles in the yard. Finally got my husband to make a branch rack out of wood and stock fence which has worked well.