I've always been a 24-25" guy on boat and cable (pretty moderate and usually the center stance). I am a firm believer that it is all about the right stance for your physiology. Kyle Schmidt had a great article 2 years ago that pushed me to re-evaluate the stance I have used for 20ish years.
https://hw4.typeform.com/to/w3FqBz
Based on his calculator I was a 23" stance. I came up with a silly way to test that worked well. I put my binding on without the board stood on the ground did some squats and scooted my feet around until it felt the smoothest and strongest. I marked the bindings on the floor and sure enough I came in a 23.25". I tried the whole process again later that day and ended up at 23.125". I now ride at 23-24" and it has been great.
Over the years I have tested wide and skinny stances. I briefly rode wide 26.5" off the wake in 2001 and also quickly tore an ACL. When the skinny stance thing started a few years ago I took some laps 21". It was super fun whipping 360s on to everything and I thought I liked it, but a weekend as BSR left my hips sore for a week.
I'm 5-9 with fairly straight legs (not pigeoned or bowed) and I have a 31" inseam. I am currently riding 23" boat and 24" cable. Mostly because those are the options available on the boards I am riding.