Buoyancy issues...

[Greenwood_60]

I, in general, have buoyancy/trim issues. My problem starts with 1) I sink. In fresh water, with no gear, I sink with a full breath of air. With a 3 mil shorty, I float with a full breath of air, and sink when I exhale. The problem is I have not only a large bone structure, I also have very dense bones. Never broken a bone, probably never will (going on 18 years of Football, peewee, HS, 1AA college, semi-pro).

My problem with trim is that my legs are considerably less buoyant then my upper body. I have not found any weighting scheme that will get my legs up. I have even though about strapping sealed PVC cylinders to my ankles to get them up.

I am trying to get all my skills in order to start my cave cert, but this is really sticking me. Anyone have any ideas? Am I just a NOOB, to be schooled on the errors of my ways? Or is my "I'm just big boned" excuse legit?