I fly Storm Voyagers 3 strutless. Both 12 and 15. I use them for foiling. In my opinion the 15 is useable in much less wind than the 12. I'm app. 80 kg and riding a Moses Fluente and Vorace setup. I know you can move a smaller kite faster around, but a downstroke with 30 m lines on the 15 gets you g...