I agree with Rolf here.

Set everything rather tight and then slowly head-up to pick up pressure and speed and start snaking , making S-curves to keep the luff hull up.

I found it works best on my boat when I do this hiking out (not trapezing) with my hand only pushing against the tiller arm of the rudder (not the tiller bar or tiller extension). On my boat I can feel the slight changes in pressure on the rudder-tiller and that is enough info for me to tell me whether I need to head up or bare off.

Works for me ; even when it DIDN'T at the GC 2007 <img src="http://www.catsailor.com/forums/images/graemlins/mad.gif" alt="" />

Although it did again during the following NAM-REM distance race. I was way back after the upwind leg and regained alot (close to 8 minutes) during the last halve of the downwinder.

Wouter