Wakeboard gets out of the water faster because it has way more surface area than a single slalom ski. A Pickle fork boat does not have way more wetted surface than a standard V. They are very similar in most cases.
I actually think a pickle fork in general might be able to get on plane quicker but it has nothing to do with the running surface. I think it might have to do with more weight in just the tip that a similar hull traditional bow.