Bale grazing doesn't have to mean no rings.Yes. They're bloody heavy!
The whole job is still a bit of a work in progress really. Dad wasn't keen on leaving bales out in summer so they still need taking out with the tractor. And he is used to feeding bales in ring feeders so it's all not too scary and different for him. He'll come around in time
The big herds can eat a bale with no ring quick enough that they don't end up shitting and sleeping on too much but smaller herds that finish the bale slower tend to leave an extra thick mat. No reason you can't put a ring around it to keep it more contained. I put rings on almost all of my winter bales no matter where they end up placed. The neighbours leave their bales where the baler spits them out and then wires off a certain amount for the cows and sticks rings on them. When those are done, they move the wire and rings over.
My rings are fairly lite, I just walk them around, no need for equipment to move them.
Bale grazing is flexible. You can do it just about any way that will get the old timers along for the ride to give it a try