I'd say "no". Not because it's useful info, but that rigging a sail correctly is really not that hard.
(Unless it's a North - for some reason both North's I've had (an 06 Voodoo 5.7 and 06 Crossfire 6.0) require a stupid amount of outhaul for the battens to rotate. Maybe it was just the 06s or maybe I should stop buying 2nd-hand!)
What I *do* reckon is useful is his trick of positioning your back harness line exactly 1/3 back along the sail, using the bit of elastic that comes with the cribb sheet. But I made one up myself using elastic, a couple of picture hooks and white paint - cost me around $5.
Hi fall off, I have found some of the Cribb sheets very useful, these ones are free, and I think all you may need,
www.guycribb.com/windsurfing_technique_holiday_DVD_0076v01.htm
Just buy the DVD, well worth the purchase and it covers all you need...the rest can be found on his web site. That said I did buy the Cribb sheet to see if there was any hidden secrets to be uncovered...but no. The elastic 1/3 rule does work, since i've used this method my rig has been in perfect balance...just set once and forget. Delivery time was also a bit slow, about 3 months.
