Buoyancy in a dive is like balance riding a bicycle ...it is an integral part of it. What you may want to practice is fine tuning it using only your breathing to control desired depth change ie go up a foot or two to pass an obstacle of some sort, and then going back to the depth you were once you are passed said obstacle, etc. This will also become very useful when you are doing safety stops in open water, ie not having the luxury to use the bottom or a mooring ball as a reference, only your dive computer and adjusting your breathing to fine tune your buoyancy to remain at 15 ft.
Finning, however, is a different story. As a starter, you need to adapt the technique based on the requirements and diving conditions. Try moving forward while being very close to the bottom without silting, as a starter.
Finning also has to be efficient...ie the more efficient you are, the less energy you use which results in lower air consumption. A good example is the frog kick...one good kick and then glide, as long as you can, then repeat, as necessary.
Finning, however, is a different story. As a starter, you need to adapt the technique based on the requirements and diving conditions. Try moving forward while being very close to the bottom without silting, as a starter.
Finning also has to be efficient...ie the more efficient you are, the less energy you use which results in lower air consumption. A good example is the frog kick...one good kick and then glide, as long as you can, then repeat, as necessary.