I think most of us free feed. It seems to me that you would hve to at least double if not triple the number of feeders you put out if you're only going to do it a couple of times a day or else the lower ranking hens would never get to eat.
I know many people take the feed away from meat chickens part of the time to prevent them from overeating, but it's not much of a problem with layers. I keep feed/water and oyster shell available 24/7. The feed and oyster shell is in the coop and the water is in the run (the two ducks make too much of a mess with it.) If you have a rodent problem it's a good idea to put the feed up at night, but they should still have access to it during the day.
I know many people take the feed away from meat chickens part of the time to prevent them from overeating, but it's not much of a problem with layers. I keep feed/water and oyster shell available 24/7. The feed and oyster shell is in the coop and the water is in the run (the two ducks make too much of a mess with it.) If you have a rodent problem it's a good idea to put the feed up at night, but they should still have access to it during the day.