david weaver
... those are the only ones I've seen.

Inomoto finishes with chisels, and someone else I know (over on this side of the ocean) who has made a lot of western planes said he never used anything with chisels. I don't see any evidence of floats on my nimura dais either.

I guess it depends how good you are with chisels. I've only made one dai, I did use floats a little bit, I would've been just as well off to stick to the 2nd cut coarse files that I was using and pare the final surface to a clean look.

I think I would have trouble making a coffin smoother without floats...especially given that I have trouble making a coffin smoother with floats.