the reason for a "duck" stance is so if you are a freestyle rider, and people who ride in the park is that if you were to ride switch it isnt much different and is easier. If you were to have both feet positive in stance, riding switch would be almost impossible. My stance is 15 -15, this allows me to ride both ways with easy. It is personal preference to, some people will have 16 -14 stance. Its just what ever feels comfortable.
Union Danny Kass signature model
Lib Tech Skate Banana
K2 Darko Boots