Help with stance

I used to surf a little when I was a kid, never got past the beginner phase and here I am some 15 years later trying to learn and get past the beginner this time.

I’ve always considered myself to have a regular stance but today I caught a few waves and popped up goofy for some reason. All I can think of is my knees an are a bit torn up so maybe It was more comfortable in the moment. The pop up almost felt faster and more fluid/comfortable.

I also used to skate but I pushed mongo. If i pushed mongo I would push regular stance but if I pushed properly I would be goofy stance. Don’t know if it matters but if I play soccer my left leg is much more powerful.