I like to wear one when the ice gets shaky,also have picks around my neck
I do the same for early or late ice. The lifejacket may not keep me fully afloat, but it sure will buy me a few extra minutes of time to get my picks off of my neck and some extra lift to pull myself up. And khaaxma, they make lifejackets for a wide range of weight classes, so just get one that will account for the gear you have on at the time for icefishing, and you can be sure it will keep you afloat. Avoiding bad ice is a good choice, but that doesn't always mean that you will never fall through, and any extra help in the water could save your life.