Rick,
You are WRONG! If you can make the tail sink, the nose will float better / stay afloat better. To a certain extent, you can accomplish the same effect by moving the bindings to the back of the board. However, giving it more of a swallow tail will definitely work better, especially in light, fluffy powder.
In Tahoe the 4807 is pretty good, but it still lacks something on fluffy days. Its a major improvement over many other boards, but it could benefit from this mod.
Its not like surfboards where any design will work the same, regardless of conditions, rider and other stuff, right? I think you know something about surfboards, no?