A few years ago a windsurfer I know swears he's never seen anything go upwind faster than a kitesurfer. If he's right the kitesurfer wasn't even on today's top equipment. I can't explain it because the closest heading I get is 80 degrees. He could have been a speed kitesurfer.
Kitesurfing is somewhat limited by it's slow upwind capability. Windsurfers think this.
Does anyone know if a finless speed board is the way to go? I find a narrow tailed board with big fins isn't bad.