These days SCUBA usually involve a buoyancy compensation or BC vest that uses air from your SCUBS tank to allow precise adjustment of your buoyancy. I freedive and no such device is used, so I have to physically make weight adjustments.

In addition to my seemingly everchanging weight, I am usually messing with new and different gear, each item of which has makes it own buoyancy contribution. Camera and camera light housings, large spearguns - particulary if with wooden bodies, foraging tools like abalone irons and crab or bivalve legal-size guages which vary with the legal season, gloves, booties, rash guard clothing, etcetera. It always seems to be a different buoyancy puzzle.

The puzzle is always quickly solved, but it is a step in my preparation each time.

Maybe I am doing something wrong!