I'm 6'2/6'3 and I've changed my stance width and angles so many times over the years I've lost track of what I'm riding now. I generally just stand on the board when I'm setting up a new one and start with what feels natural. If I need to tweak it at the mountain I do so but I'm at the stage where the only air I get is if I have to avoid an obstacle or I have no other option so I'm more concerned with comfort and maneuverability rather than leverage and landing stability.
It really does just depend on what feels right to you and what type of riding you do the most of.
I am in the same boat as you. I have been riding for about 5-6 years now and I change my setup SO MANY TIMES!!! I have lost count!!! I mostly rock 15/-15 or 12/-12 at around 22.5-23".
In my experience...these are the factors that will determine your stance.
(1) It depends on what kind of riding you want to do. When I'm doing mostly jumps...I like it pretty wide (23") with 15/-15...feels more stable. I am 5'5" and 155 lbs (stocky build). If I am doing rails/boxes...I like 12/-12 or 9/-9 and a bit narrower 21-22".
(2) I think you have to factor in body type. Say...the size of your leg muscles/bones, hip width, shoulder width and torso vs leg length.
I ride Big Bear in Cali where I see a lot of PROS on the slopes. Its weird cuz I even question some of their widths/angles...."why the hell do they have it like that? It looks a little uncomfortable."
Case in point: Simon Chamberlain. Dude is TALL AS HELL
. I am guessing 6'2-6'4...and his width looks NARROW...20-22 maybe. I originally thought that because he was tall...that his width was going to be wide 23+. But its not true.
But than again I don't know for sure...I think body type has some but not a whole lot to do with it.
(3) Board shape, length and flex. I believe that "every board" has an "optimal" width/angle setup and its your job to find it and see if it will work for you. If you can find it...that is where you will get the best "performance/pop/flex/potential" from the board WHILE still having your lower body (knees/ankles/muscles) be at its most comfortable with the least amount of pain.
(4) The most important one I have found to be the biggest factor in the width and angles is: Riding skill/experience and CARVING CORRECTLY/PROPER EDGE CONTROL!!!
This is ONE REASON
why I NEVER jumped on the rocker/hybrid camber craze when it first came out. I have ALWAYS
stuck with tried and true camber because (1) I believe I have found the "BEST" width/angle for that particular board and (2) I know how to carve/press the board "properly" and control my edges. I do think rocker/hybrid camber is innovative, new and something thats good...BUT...I believe the real reason they came out with it...was because they saw that people were not or could not learn how to carve correctly and did not have proper form/technique for superior/good edge control. So...they invented the rocker so you basically didn't have to put as "MUCH EFFORT"
into your carves and basically had ALL
or enough edge control.
Why do you think all the OG PROS
"mainly" still use tried and true camber...??? Because of all the reasons I stated above.
Case in point: Myself. After 5-6 seasons now...I believe I have finally learned the proper form/technique for carving with a cambered board...which is why I am able to change my angles and widths at free will. They ALL FEEL comfortable now...because I have FINALLY learned how to carve properly. I believe that when you have had enough experience/time and skill in learning how to properly carve a snowboard...your stance will "FINALLY" feel the MOST COMFORTABLE
no matter what it looks like.
My best advice is to play with it until you find what works. And (2) learn how to carve "properly" with the right form/technique for good edge control.