This topic has probably been discussed before, but I couldn't find anything. Is there any benefit to propellers with winglets or any other vortex reducing device? I'm guessing that there might be a velocity limit to winglets and that's why they aren't used on props, but I could be wrong. I'm also guessing that if they do improve performance, the prop would probably be susceptible to breaking at the point of curvature. If that's the case, what about raked tips?

What's your take on the whole subject?

I think I asked too many questions.