As a man, i have big feet, i'm a 9.5 (US Size). I guess the Merfin is out? Or i can ask a custom merfin for me?

I don't mind getting the competitor. I guess i'm gonna have to pay for this upgrade but would it be all right to cut it a little so the fins could be more floppy?
That's what happened with mermaid Ayla, right? If i'm not mistaken.