I have honestly never once considered hip width in my 35 years of skateboarding. This isn't meant as an insult to you, OP...but it has never once crossed my mind. And I like dudes with big asses...and I STILL have never considered this as it pertains to skateboarding.
I have a neurotic attention to detail i got from my polish grandmother.
Just think of what narrow hips and a wide stance looks like. Like a pyramid right? Stable as fuck; like sheckler was in his youth when his hip width was much narrower than his board length.
Now think of a person with wide hips and a narrow stance- like an upside down pyramid. Does that look stable? Fuck no, it will fall over like a top.
Pay attention to the hip width of pros. You will notice the ones with narrow hips tend to be more consistent and more natural.
This is also why most female skaters look terrible and forced. Wide hips are a disaster if you want to skate well beyond your teenage years.