Using only the suit for buoyancy is a good way in the beginning to get hurt. I don't know why agencies keep spewing this junk. Once you have a crapload of dives in the suit and have your weighting nailed, you will find that the amount of air you use to offset squeeze is enough to achieve neutral buoyancy. In the beginning though I find it stupid to tell students to ignore a perfectly good bc that vents faster, is familiar as far as controls go, and has a much smaller and more compact bubble to manage. So I refuse to and teach enough air to offset squeeze, distribute weights so that you only drop the smallest amount necessary, and use the bc for buoyancy control.
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