I feed small squares for most of the year and rounds during cold/snowy/nasty weather in winter. I weigh and use slow feed nets (once you do it for a while, you learn the “feel” of the amount you need; after the first few weeks I only weigh sporadically to check myself) and I also purchased a round bale net from Hay Chix in 2021. That net counts as one of the best purchases I’ve made for my boys in 15 years. Seriously.
I went from a round lasting 7 days during the winter and always having some waste even in a hay ring, to lasting 10 days with no waste, which saves a full round per month. My guys are currently barefoot, but even when shod it’s been okay because I still use the hay ring even with the net, and they’re both in their teens and not crazy.
During a few lean times I’ve supplemented with soaked pellets and cubes, and I’m not above stringing a temp line (they respect electric) around areas of my yard to give them a few hours each day of extra grazing. I always thought it was silly to pay for gasoline to mow the yard AND pay for hay to feed the horses when I could just feed them the grass.