Here's what I have come up with for my first surf SUP. Shaping might turn out different but it will be a learning experience.
I've gone a little retro but without a swallow tail so I can bring the tail width in enough.

Approx 8'6" x 29.5" x 4.2"

The thinking behind it...

- Wider through the nose with a solid concave for nose riding and some extra speed
- Narrower into the tail with lots of V to keep it really loose under the back foot
- Diamond tail cos I like it
- Gradual rocker into the nose (approx 40mm more than my Oxbow). No sharp kick to maintain paddle speed into waves.
- Reasonably flat through the middle (don't know why, just turned out that way)
- Reasonable tail lift similar to my Oxbow but this will have slightly more lift over shorter length for better top to bottom performance

Am I on the right track here? Any tips would be great!