But I feel the image of "yacht" or "wind surfing" from your icon. Our main target is "surfing", so the image of "surfing" or "wave" is better. The icon without the image of particular sports is better too, like "sun" or "sea".
Older version #28 is our 1st rank now. Because my business partner says , "The icon of #28 looks like fin of surf board. So it's suited for the logo for surfing."