did an experiment since i have my sail specs in a spreadsheet
did reverse engineering and discovered luff * boom / 1.5 is REALLY close to sail size
so, in this case ...
4.11*2.13/1.5=5.836 sq meters
rounded up that's a 6.0 sail - make sense ??
joe windsurfer @ 105 kg
2012 JP SLW92, 2013 AHD SL-2 132, 2000 Fanatic BEE 124 LTD + Mistral Equipe II XR (Mistral SLE303 to beat up)
HSM Fire 6.3, NS Duke 6.9, TR-6 8.4, HSM SPF 8.5,TR4 10.0
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