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stehsegler said..Have a look at Ben's technique at 2:16. He was on a 5.0 foil sail with wind about 8 knts . BTW Balz uses a 4.8 Foil Freek... which is a freestyle sail with very small cambers. The advantage of the freestyle / dedicated foil sails is that they are designed for lift.
How can you state there were 8 knts? I once mesured the wind just to understand how much was enough to get going, assuming the wind meter was accurate 8 knts is very very little wind, should not be any gust to give you a chanche I doubt anyone could get flying with a 5.0 in that condition, other than a gorilla weighting 30 kg pumping like hell.
when talking about wind speed we need to talk about ranges, since is quite never so constant, and I bet if we pay right attention in those gusts we have an opportunity to fly ...I doubt anyone could in 8 knts with 5.0... myself not for sure youst to be direct and put the skills in the equation as well. People with skills, even Balz, they speak range...for him light wind is 8-15, but is not to say he gets flying in 8 knts he probably can stay on the foil when there is a 8 knt lull, but the get up he needs more than that expecially with small sails he uses.
Then on measuring wind, 8 knts at sea or on the beach? Onshore or offshore. is that average on what period? Is that the max, the min?Is there swell to help in getting speed?
Since the action of getting airborn is taking place in few seconds and the most important phase is the very first pumps, is that wind we should measure, and is not easy at all, most of our statements on wind strenght are qualitative and inaccurate to drive reliable conclusion on what is the minimum to get flying with a certain kit combo..I know that since I tried, and failed in doing so. Beginning of the season when you are not yet used to wind, a small wind seem more than it is, forward in the season is the opposite, expecially for those that are not sailing that much, so perception play tricks on us as well.
Just sharing my own experience on low wind
cheers
Edoardo