I haven’t read all comments yet, so forgive me if this has been resolved already. At 29 seconds into this video https://www.youtube.com/watch?v=Xm8IIyjNwWw you can see Fuddy seated and her foot is visible. She appears to be wearing white socks and black shoes. On the plane, right before the crash.
See post 354.
Black shoes with light colored soles. Butter’s frogman is in reality Fuddy’s shoes bobbing in the waves. She is laying on her back, her head is hidden behind the life vest.