why head above the water when kicking with kick board?

I always choose the oldest, most waterlogged kickboard with the least buoyancy. Those firm, new ones push my shoulders up too high and put too much strain on my lower back. I only place my hands lightly on it and usually have my face in the water most of the time. It is really just a little prop. Something to form the smallest amount of resistance against when I want to lift my head to breathe. Having said that, it probably isn't a good prop to have at all because it encourages lifting of the head as opposed to a rolling of the body initiated from the hips. I am guessing the best way to kick would be without a board at all. Arms stretched out in front, eyes to the bottom of the pool with a roll to the side when a breath is needed. This way, however, is definitely more tiring.

I always choose the oldest, most waterlogged kickboard with the least buoyancy. Those firm, new ones push my shoulders up too high and put too much strain on my lower back. I only place my hands lightly on it and usually have my face in the water most of the time. It is really just a little prop. Something to form the smallest amount of resistance against when I want to lift my head to breathe. Having said that, it probably isn't a good prop to have at all because it encourages lifting of the head as opposed to a rolling of the body initiated from the hips. I am guessing the best way to kick would be without a board at all. Arms stretched out in front, eyes to the bottom of the pool with a roll to the side when a breath is needed. This way, however, is definitely more tiring.