RE: what fin size for a 6.8m on a S type104
Boy things appear to be heated a bit!
Really, I think that Dolf has raised a vaiid point about fin area. Apart from recommendations, it would be good to better appreciate fin area, and particular, its planform when talking about fins. Depending on use, the shape of things can be varied. Information is power, so let's invest a bit more sensibily. And that should include the "Team" too.