Right. This is where I dismiss what you've said out of hand. I'm sure you expected it. Bouyancy far and away better solves the issue of how animals appear in strata and the extremely good sort of said strata all things considered. I don't tend to dismiss things that tend to tell the story better - especially when the theory explains more than it causes need to theorize about. Sorry, the fewer elements needing explained by a theory, the more likely the theory is to hold up. How many theories and subtheories is evolution up to now?..
Dear God, you're kidding, right? After everything I, and several others, have pointed out to you as to why "buoyancy sorting" does not account for what we see, you're just going to "dismiss it out of hand."
That's creationism for you.