hehe, I have argued elsewhere against tricky design features, now I will show my natural contrariness by arguing for the exact opposite position. Not really. I do have my doubts about benefits of double concaves, etc, but I did put them into my wing board…copying others out there. I figure it’s not unlikely to hurt performance, so may as well try. I do think chines are worthy though … risk of digging in that corner on a good sharp turn. Nose rocker…I am a fun, I have quite flat kite foilboards and I hate the way they plow water on touchdowns. I was surprised that the sky boards have tail rocker…but that’s in keeping with some discussion I’ve heard for preference for a little nose up vs flat, for a natural surfing feel when dropping into waves.
Interesting thing about the 5’ sky board is at nearly 6" thick it has enough volume while only 24" wide…that’s pretty nice for riding performance, vs normal sup widths. A buddy’s board was 5.9x26x3.5 and I could just barely knee start it, so tippy that it was close to unrideable…made me a believer in the thickness.