Chris, since I suffer the most in light air, and the boat don't seem to have a lot of drive in theese conditions, the settings I use are the one recommended for heavy crew on the nacra 20 class tuning guide: 1.5'' spreaders rake, diamond tension to give 1'' prebend. I don't have the tool to measure the diamond tension. Although you may think theese settings are excessive, I do not trapeze before 15 knots.