As a newbe and non-techy, I sail mostly by feel. We have found that in lighter air we let the halyard down about a foot and pull it tighter in heavy air. I hear that you don't want a pretty spin..like it is going to colapse but that has never really worked for me. I asked one of the top sailors in our area and he said to fly the tell tales. It has been great adivise and works well. I fly them right on the edge...loser not tighter. PTP is right..having a crew to constantly work the spin is the best. I saw the spin and work the jib along with it for the most speed. As for the driving angles and that I have no idea because I don't drive.