Large bales are not for everyone, and they do take extra equipment to move. However, they are so much easier to manage than smaller bales with less time in the snow and on the ground. Plus you are not having to feed in the evenings or mornings because alpacas will not over eat.
You do not need an elaborate feeding system to feed alpacas. Even if you do not have feeders, we found one of the best, least expensive set-ups is to put hog wire around a pallet so the alpacas can pull the hay out while keeping the bale in tact as long as possible. Instead of using a hay poker, we used to wrap the bale up in a large cinch strap and lift the bale up and place them in the barn, in a feeder, or on the stack of hay. Any scraps and stems from the hay are given to our horses. Thus, we are about 99% efficient on hay utilization.