Just going to add a my $0.02' worth...
1) You don't HAVE to hover in the cross-legged yoga-style position. Hover in whatever position you like! Personally, I have NEVER been able to do that position, while Pearce sits there like a contented Buddah. However, I can hover upside down, on my side, at an angle, you name it. (this is especially useful for u/w photog.)
Personally, I think it has something to do with men's vs. women's centre of gravity, but don't quote me on that.
2) Check for neutral buoyancy by doing the "froggie eyes" thing: You should be at "eye level" when holding a lungful of air at the surface with all your gear (including exposure protection) on. If you DO NOT SINK when you exhale you need more weight. If you DO NOT STAY AT THE SURFACE on a lungful of air, take off weight. This is a very important tool that you will use throughout your diving life, esp when you LOG the numbers for various exposure suits & water types.
3) Spread the weight around for better trim. It doesn't all have to be on your belt! Sometimes people find ankle weights help, or tank weights, or a combo of wt belt & BC wts, or even a steel tank... etc., etc., etc.
4) Take a peak performance buoyancy course. Or a photo course. They will help you learn to control your buoyancy.
5) Relax! Have FUN! These things will come with patience & practice.
~SubMariner~