i don't understand why, but according to the following page, flatter sails are better in the lightest of airs:
http://www.uiowa.edu/~sail/skills/racing_basics/chap2.shtml
seems to work on my weta in 5 knots or less. if i loosen the downhaul to deepen the camber in such wind, the leeward telltales stall on my main. and i'm never first to the weather mark, as i typically am otherwise.
conversely, deeper is good in 10-15 knots. beyond that i start flattening to reduce power.
ben
weta #358, "gray matter"
ithaca, new york
--- In harryproa@yahoogroups.com.au, "heinrich_meurer" <meurer@...> wrote:
> looking at the photos it appears that there is very little wind. In such conditions flat sails and the wrong mast rotation and the attempt to steer into the wind at all costs kills boat speed.