Bruce,
<br>On my boat 45deg in those conditions would be too much.
<br>The spanner would be pointing at the rear beam probably where it meets the hull. This will vary from boat to boat and even with different main sails. It really is a case of experimenting with your particular setup, but I think you will do better with less rotation.
<br>I have a tell tale an inch or so back from the luff of my sail about half way up. I use this to set my rotation in light to med conditions. Looking for laminar flow on both sides. But once the breese really kicks in I go by feel as they stream over a much wider range of angles.
<br>As far as ouhaul goes it also depends on the cut of your sail
<br>so once again all I can suggest is experiment, preferabley with a training partner to guage progress.
<br>
<br>Good Luck,
<br>Phill<br><br>