My 4 ponies live out with a small barn (no door) for shelter. Our grazing is poor. For most of the year we put hay in “mangers” made from floats used in mussel lines, cut in half. There are 2 outside and 1 in the barn. We do not feed on the floor of the barn as the area is shared with chickens. We have enough trouble with hens making nests and laying eggs in the mangers as it is! We may occasionally add a haynet or two when the wind is in the wrong direction for the hay to stay in the mangers!
In summer, when the ponies are out in the other fields - ie no barn - we provide a round bale placed on a pallet, and fenced in on 3 sides, with a net over the top.