Silly Walter.Walter:Learn how to find your way back to the exit point, something they should have taught you in the OW class.
Learn to let the current carry you along, something you learn in a 30 second briefing if you pass on the class.
Learn buoyancy control, something they should have taught you in the OW class.
If you do it the way you explained, which, was the route most older divers took, who would be there to collect and cash the checks? If we went back to teaching those in OW a species of marine life would go extinct, the Money Grabbing Buck Suckers. Greenpeace would freak out.

Gary D.