I like your post. and buoyancy is a difficult to master. what I have done and still do is watch the you tube flics of the guy doing donning and doffing of gear while maintaining depth and trim. It is a skill that will never et enough practice. A pool is a great place to do this. Most think that the simple ACT of dropping a stage bottle and then picking it up is no great feat. It is a great feat for most. There are a dozen ways to trim and weight yourself to stay on depth. few of them work when it comes to dropping off or picking up a piece of gear or shoot a buoy. You reach and you roll and end belly up or in a number of other positions. But when you get it right you know it and you can do anything. Do you need to MASTER buoyancy to take AOW, no. Should you be in control of your buoyancy and not buoyancy being in control of you, yes. Diving is so much more fun that way.
As someone who plans on taking AOW once the water becomes a liquid again, I like the timing of this thread, it'll give me something to work on through the winter in the pool. I've noticed something too... every single reply mentions buoyancy control! There must be a reason for that
So my question is, is there a good way to practice this besides just swimming around? I'm thinking of bringing something to act as a reference, just not sure what yet.