Hi there, I've got a question.
Recently, there have been a long discussen about fin and lifting and a while
age a discussion about sail size and fin size. If I remember right, peoples
opinion is: large sail --> large fin, small sail --> small fin. Right?
The next point is that people argue that a larger fin causes more lift
and a small one more spin outs. Right again? The conclusion would
be: optimal fin size = f(sail size).
Ok, I thaught that this sounds reasonable,. However, while thinking more
and more about the line of arguments, I more and more doubt that.
Usually, I change the sail if the wind conditions are different. I.e.
light wind --> large sail, strong wind --> small sail. The consequences
are that I have allways almost the same power (while planning) and therefore,
the same downwind pressure. That means that I allways need the same fin.
Actually I have only one fin for my slalom board and I use this for
4.0 - 6.5 sails without problems. I'd rather say, the fin size is determind
by you weight (!), the surf board, the sail quality and you sailing
Any other opinions on that (probably lots of objections).